// ==UserScript==
// @name           Flickr Inline Edit Light
// @namespace      http://www.flickr.com/alesadam
// @description    Allows you to edit and delete thread comments without leaving the page.
// @creator        Alesa Dam (http://flickr.com/alesadam/)
// @date           24/09/2012
// @version        0.9.3
// @modified       Aug 16, 2013
//
// @include        http://www.flickr.com/groups/*
// @include        https://www.flickr.com/groups/*
// @include	   https://secure.flickr.com/groups/*
//
// @downloadURL	   https://userscripts.org/scripts/source/175877.user.js
// @updateURL	   https://userscripts.org/scripts/source/175877.meta.js
//
// @grant	   GM_getValue
// @grant	   GM_setValue
// @grant	   GM_deleteValue
// @grant	   GM_log
// ==/UserScript==
//
(function() {

if (!document.location.href.match(/flickr.com\/groups\/[^\/]+\/discuss\/\d+/)) {
	exit (1);
}

	var FIELversion = "0.9.3";

	var installPage = 'http://userscripts.org/scripts/show/175877';

// Greased MooTools
	/*
---

script: Core.js

description: The core of MooTools, contains all the base functions and the Native and Hash implementations. Required by all the other scripts.

license: MIT-style license.

copyright: Copyright (c) 2006-2008 [Valerio Proietti](http://mad4milk.net/).

authors: The MooTools production team (http://mootools.net/developers/)

inspiration:
- Class implementation inspired by [Base.js](http://dean.edwards.name/weblog/2006/03/base/) Copyright (c) 2006 Dean Edwards, [GNU Lesser General Public License](http://opensource.org/licenses/lgpl-license.php)
- Some functionality inspired by [Prototype.js](http://prototypejs.org) Copyright (c) 2005-2007 Sam Stephenson, [MIT License](http://opensource.org/licenses/mit-license.php)

provides: [MooTools, Native, Hash.base, Array.each, $util]

...
*/

	var MooTools = {
		'version': '1.2.5dev',
		'build': '168759f5904bfdaeafd6b1c0d1be16cd78b5d5c6'
	};

	var Native = function(options) {
		options = options || {};
		var name = options.name;
		var legacy = options.legacy;
		var protect = options.protect;
		var methods = options.implement;
		var generics = options.generics;
		var initialize = options.initialize;
		var afterImplement = options.afterImplement || function() {};
		var object = initialize || legacy;
		generics = generics !== false;

		object.constructor = Native;
		object.$family = { name: 'native' };
		if (legacy && initialize) object.prototype = legacy.prototype;
		if (!object.prototype) object.prototype = {};
		object.prototype.constructor = object;

		if (name) {
			var family = name.toLowerCase();
			object.prototype.$family = { name: family };
			Native.typize(object, family);
		}

		var add = function(obj, name, method, force) {
			if (!protect || force || ! obj.prototype[name]) obj.prototype[name] = method;
			if (generics) Native.genericize(obj, name, protect);
			afterImplement.call(obj, name, method);
			return obj;
		};

		object.alias = function(a1, a2, a3) {
			if (typeof a1 == 'string') {
				var pa1 = this.prototype[a1];
				if ((a1 = pa1)) return add(this, a2, a1, a3);
			}
			for (var a in a1) this.alias(a, a1[a], a2);
			return this;
		};

		object.implement = function(a1, a2, a3) {
			if (typeof a1 == 'string') return add(this, a1, a2, a3);
			for (var p in a1) add(this, p, a1[p], a2);
			return this;
		};

		if (methods) object.implement(methods);

		return object;
	};

	Native.genericize = function(object, property, check) {
		if ((!check || ! object[property]) && typeof object.prototype[property] == 'function') object[property] = function() {
			var args = Array.prototype.slice.call(arguments);
			return object.prototype[property].apply(args.shift(), args);
		};
	};

	Native.implement = function(objects, properties) {
		for (var i = 0, l = objects.length; i < l; i++) objects[i].implement(properties);
	};

	Native.typize = function(object, family) {
		if (!object.type) object.type = function(item) {
			return ($type(item) === family);
		};
	};

	(function() {
		var natives = { 'Array': Array, 'Date': Date, 'Function': Function, 'Number': Number, 'RegExp': RegExp, 'String': String };
		for (var n in natives) new Native({ name: n, initialize: natives[n], protect: true });

		var types = { 'boolean': Boolean, 'native': Native, 'object': Object };
		for (var t in types) Native.typize(types[t], t);

		var generics = {
			'Array': ["concat", "indexOf", "join", "lastIndexOf", "pop", "push", "reverse", "shift", "slice", "sort", "splice", "toString", "unshift", "valueOf"],
			'String': ["charAt", "charCodeAt", "concat", "indexOf", "lastIndexOf", "match", "replace", "search", "slice", "split", "substr", "substring", "toLowerCase", "toUpperCase", "valueOf"]
		};
		for (var g in generics) {
			for (var i = generics[g].length; i--;) Native.genericize(natives[g], generics[g][i], true);
		}
	})();

	var Hash = new Native({

		name: 'Hash',

		initialize: function(object) {
			if ($type(object) == 'hash') object = $unlink(object.getClean());
			for (var key in object) this[key] = object[key];
			return this;
		}

	});

	Hash.implement({

		forEach: function(fn, bind) {
			for (var key in this) {
				if (this.hasOwnProperty(key)) fn.call(bind, this[key], key, this);
			}
		},

		getClean: function() {
			var clean = {};
			for (var key in this) {
				if (this.hasOwnProperty(key)) clean[key] = this[key];
			}
			return clean;
		},

		getLength: function() {
			var length = 0;
			for (var key in this) {
				if (this.hasOwnProperty(key)) length++;
			}
			return length;
		}

	});

	Hash.alias('forEach', 'each');

	Array.implement({

		forEach: function(fn, bind) {
			for (var i = 0, l = this.length; i < l; i++) fn.call(bind, this[i], i, this);
		}

	});

	Array.alias('forEach', 'each');

	function $A(iterable) {
		if (iterable.item) {
			var l = iterable.length, array = new Array(l);
			while (l--) array[l] = iterable[l];
			return array;
		}
		return Array.prototype.slice.call(iterable);
	};

	function $arguments(i) {
		return function() {
			return arguments[i];
		};
	};

	function $chk(obj) {
		return !! (obj || obj === 0);
	};

	function $clear(timer) {
		clearTimeout(timer);
		clearInterval(timer);
		return null;
	};

	function $defined(obj) {
		return (obj != undefined);
	};

	function $each(iterable, fn, bind) {
		var type = $type(iterable);
		((type == 'arguments' || type == 'collection' || type == 'array') ? Array: Hash).each(iterable, fn, bind);
	};

	function $empty() {};

	function $extend(original, extended) {
		for (var key in (extended || {})) original[key] = extended[key];
		return original;
	};

	function $H(object) {
		return new Hash(object);
	};

	function $lambda(value) {
		return ($type(value) == 'function') ? value: function() {
			return value;
		};
	};

	function $merge() {
		var args = Array.slice(arguments);
		args.unshift({});
		return $mixin.apply(null, args);
	};

	function $mixin(mix) {
		for (var i = 1, l = arguments.length; i < l; i++) {
			var object = arguments[i];
			if ($type(object) != 'object') continue;
			for (var key in object) {
				var op = object[key], mp = mix[key];
				mix[key] = (mp && $type(op) == 'object' && $type(mp) == 'object') ? $mixin(mp, op) : $unlink(op);
			}
		}
		return mix;
	};

	function $pick() {
		for (var i = 0, l = arguments.length; i < l; i++) {
			if (arguments[i] != undefined) return arguments[i];
		}
		return null;
	};

	function $random(min, max) {
		return Math.floor(Math.random() * (max - min + 1) + min);
	};

	function $splat(obj) {
		var type = $type(obj);
		return (type) ? ((type != 'array' && type != 'arguments') ? [obj] : obj) : [];
	};

	var $time = Date.now || function() {
		return + new Date;
	};

	function $try() {
		for (var i = 0, l = arguments.length; i < l; i++) {
			try {
				return arguments[i]();
			} catch(e) {}
		}
		return null;
	};

	function $type(obj) {
		if (obj == undefined) return false;
		if (obj.$family) return (obj.$family.name == 'number' && ! isFinite(obj)) ? false: obj.$family.name;
		if (obj.nodeName) {
			switch (obj.nodeType) {
			case 1: return 'element';
			case 3: return (/\S/).test(obj.nodeValue) ? 'textnode': 'whitespace';
			}
		} else if (typeof obj.length == 'number') {
			if (obj.callee) return 'arguments';
			else if (obj.item) return 'collection';
		}
		return typeof obj;
	};

	function $unlink(object) {
		var unlinked;
		switch ($type(object)) {
		case 'object':
			unlinked = {};
			for (var p in object) unlinked[p] = $unlink(object[p]);
			break;
		case 'hash':
			unlinked = new Hash(object);
			break;
		case 'array':
			unlinked = [];
			for (var i = 0, l = object.length; i < l; i++) unlinked[i] = $unlink(object[i]);
			break;
		default: return object;
		}
		return unlinked;
	};

	/*
---

script: Browser.js

description: The Browser Core. Contains Browser initialization, Window and Document, and the Browser Hash.

license: MIT-style license.

requires: 
- /Native
- /$util

provides: [Browser, Window, Document, $exec]

...
*/

	var Browser = $merge({

		Engine: { name: 'unknown', version: 0 },

		Platform: { name: (window.orientation != undefined) ? 'ipod': (navigator.platform.match(/mac|win|linux/i) || ['other'])[0].toLowerCase() },

		Features: { xpath: !! (document.evaluate), air: !! (window.runtime), query: !! (document.querySelector) },

		Plugins: {},

		Engines: {

			presto: function() {
				return (!window.opera) ? false: ((arguments.callee.caller) ? 960: ((document.getElementsByClassName) ? 950: 925));
			},

			trident: function() {
				return (!window.ActiveXObject) ? false: ((window.XMLHttpRequest) ? ((document.querySelectorAll) ? 6: 5) : 4);
			},

			webkit: function() {
				return (navigator.taintEnabled) ? false: ((Browser.Features.xpath) ? ((Browser.Features.query) ? 525: 420) : 419);
			},

			gecko: function() {
				return (!document.getBoxObjectFor && window.mozInnerScreenX == null) ? false: ((document.getElementsByClassName) ? 19: 18);
			}

		}

	}, Browser || {});

	Browser.Platform[Browser.Platform.name] = true;

	Browser.detect = function() {

		for (var engine in this.Engines) {
			var version = this.Engines[engine]();
			if (version) {
				this.Engine = { name: engine, version: version };
				this.Engine[engine] = this.Engine[engine + version] = true;
				break;
			}
		}

		return { name: engine, version: version };

	};

	Browser.detect();

	Browser.Request = function() {
		return $try(function() {
			return new XMLHttpRequest();
		}, function() {
			return new ActiveXObject('MSXML2.XMLHTTP');
		}, function() {
			return new ActiveXObject('Microsoft.XMLHTTP');
		});
	};

	Browser.Features.xhr = !! (Browser.Request());

	Browser.Plugins.Flash = (function() {
		var version = ($try(function() {
			return navigator.plugins['Shockwave Flash'].description;
		}, function() {
			return new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
		}) || '0 r0').match(/\d+/g);
		return { version: parseInt(version[0] || 0 + '.' + version[1], 10) || 0, build: parseInt(version[2], 10) || 0 };
	})();

	function $exec(text) {
		if (!text) return text;
		if (window.execScript) {
			window.execScript(text);
		} else {
			var script = document.createElement('script');
			script.setAttribute('type', 'text/javascript');
			script[(Browser.Engine.webkit && Browser.Engine.version < 420) ? 'innerText': 'text'] = text;
			document.head.appendChild(script);
			document.head.removeChild(script);
		}
		return text;
	};

	Native.UID = 1;

	var $uid = (Browser.Engine.trident) ? function(item) {
		return (item.uid || (item.uid = [Native.UID++]))[0];
	}: function(item) {
		return item.uid || (item.uid = Native.UID++);
	};

	var Window = new Native({

		name: 'Window',

		legacy: (Browser.Engine.trident) ? null: window.Window,

		initialize: function(win) {
			$uid(win);
			if (!win.Element) {
				win.Element = $empty;
				if (Browser.Engine.webkit) win.document.createElement("iframe"); //fixes safari 2
				win.Element.prototype = (Browser.Engine.webkit) ? window["[[DOMElement.prototype]]"] : {};
			}
			win.document.window = win;
			return $extend(win, Window.Prototype);
		},

		afterImplement: function(property, value) {
			window[property] = Window.Prototype[property] = value;
		}

	});

	Window.Prototype = { $family: { name: 'window' } };

	new Window(window);

	var Document = new Native({

		name: 'Document',

		legacy: (Browser.Engine.trident) ? null: window.Document,

		initialize: function(doc) {
			$uid(doc);
			doc.head = doc.getElementsByTagName('head')[0];
			doc.html = doc.getElementsByTagName('html')[0];
			if (Browser.Engine.trident && Browser.Engine.version <= 4) $try(function() {
				doc.execCommand("BackgroundImageCache", false, true);
			});
			if (Browser.Engine.trident) doc.window.attachEvent('onunload', function() {
				doc.window.detachEvent('onunload', arguments.callee);
				doc.head = doc.html = doc.window = null;
			});
			return $extend(doc, Document.Prototype);
		},

		afterImplement: function(property, value) {
			document[property] = Document.Prototype[property] = value;
		}

	});

	Document.Prototype = { $family: { name: 'document' } };

	new Document(document);

	/*
---

script: Array.js

description: Contains Array Prototypes like each, contains, and erase.

license: MIT-style license.

requires:
- /$util
- /Array.each

provides: [Array]

...
*/

	Array.implement({

		every: function(fn, bind) {
			for (var i = 0, l = this.length; i < l; i++) {
				if (!fn.call(bind, this[i], i, this)) return false;
			}
			return true;
		},

		filter: function(fn, bind) {
			var results = [];
			for (var i = 0, l = this.length; i < l; i++) {
				if (fn.call(bind, this[i], i, this)) results.push(this[i]);
			}
			return results;
		},

		clean: function() {
			return this.filter($defined);
		},

		indexOf: function(item, from) {
			var len = this.length;
			for (var i = (from < 0) ? Math.max(0, len + from) : from || 0; i < len; i++) {
				if (this[i] === item) return i;
			}
			return - 1;
		},

		map: function(fn, bind) {
			var results = [];
			for (var i = 0, l = this.length; i < l; i++) results[i] = fn.call(bind, this[i], i, this);
			return results;
		},

		some: function(fn, bind) {
			for (var i = 0, l = this.length; i < l; i++) {
				if (fn.call(bind, this[i], i, this)) return true;
			}
			return false;
		},

		associate: function(keys) {
			var obj = {}, length = Math.min(this.length, keys.length);
			for (var i = 0; i < length; i++) obj[keys[i]] = this[i];
			return obj;
		},

		link: function(object) {
			var result = {};
			for (var i = 0, l = this.length; i < l; i++) {
				for (var key in object) {
					if (object[key](this[i])) {
						result[key] = this[i];
						delete object[key];
						break;
					}
				}
			}
			return result;
		},

		contains: function(item, from) {
			return this.indexOf(item, from) != - 1;
		},

		extend: function(array) {
			for (var i = 0, j = array.length; i < j; i++) this.push(array[i]);
			return this;
		},

		getLast: function() {
			return (this.length) ? this[this.length - 1] : null;
		},

		getRandom: function() {
			return (this.length) ? this[$random(0, this.length - 1)] : null;
		},

		include: function(item) {
			if (!this.contains(item)) this.push(item);
			return this;
		},

		combine: function(array) {
			for (var i = 0, l = array.length; i < l; i++) this.include(array[i]);
			return this;
		},

		erase: function(item) {
			for (var i = this.length; i--; i) {
				if (this[i] === item) this.splice(i, 1);
			}
			return this;
		},

		empty: function() {
			this.length = 0;
			return this;
		},

		flatten: function() {
			var array = [];
			for (var i = 0, l = this.length; i < l; i++) {
				var type = $type(this[i]);
				if (!type) continue;
				array = array.concat((type == 'array' || type == 'collection' || type == 'arguments') ? Array.flatten(this[i]) : this[i]);
			}
			return array;
		},

		hexToRgb: function(array) {
			if (this.length != 3) return null;
			var rgb = this.map(function(value) {
				if (value.length == 1) value += value;
				return value.toInt(16);
			});
			return (array) ? rgb: 'rgb(' + rgb + ')';
		},

		rgbToHex: function(array) {
			if (this.length < 3) return null;
			if (this.length == 4 && this[3] == 0 && ! array) return 'transparent';
			var hex = [];
			for (var i = 0; i < 3; i++) {
				var bit = (this[i] - 0).toString(16);
				hex.push((bit.length == 1) ? '0' + bit: bit);
			}
			return (array) ? hex: '#' + hex.join('');
		}

	});

	/*
---

script: String.js

description: Contains String Prototypes like camelCase, capitalize, test, and toInt.

license: MIT-style license.

requires:
- /Native

provides: [String]

...
*/

	String.implement({

		test: function(regex, params) {
			return ((typeof regex == 'string') ? new RegExp(regex, params) : regex).test(this);
		},

		contains: function(string, separator) {
			return (separator) ? (separator + this + separator).indexOf(separator + string + separator) > - 1: this.indexOf(string) > - 1;
		},

		trim: function() {
			return this.replace(/^\s+|\s+$/g, '');
		},

		clean: function() {
			return this.replace(/\s+/g, ' ').trim();
		},

		camelCase: function() {
			return this.replace(/-\D/g, function(match) {
				return match.charAt(1).toUpperCase();
			});
		},

		hyphenate: function() {
			return this.replace(/[A-Z]/g, function(match) {
				return ('-' + match.charAt(0).toLowerCase());
			});
		},

		capitalize: function() {
			return this.replace(/\b[a-z]/g, function(match) {
				return match.toUpperCase();
			});
		},

		escapeRegExp: function() {
			return this.replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1');
		},

		toInt: function(base) {
			return parseInt(this, base || 10);
		},

		toFloat: function() {
			return parseFloat(this);
		},

		hexToRgb: function(array) {
			var hex = this.match(/^#?(\w{1,2})(\w{1,2})(\w{1,2})$/);
			return (hex) ? hex.slice(1).hexToRgb(array) : null;
		},

		rgbToHex: function(array) {
			var rgb = this.match(/\d{1,3}/g);
			return (rgb) ? rgb.rgbToHex(array) : null;
		},

		stripScripts: function(option) {
			var scripts = '';
			var text = this.replace(/<script[^>]*>([\s\S]*?)<\/script>/gi, function() {
				scripts += arguments[1] + '\n';
				return '';
			});
			if (option === true) $exec(scripts);
			else if ($type(option) == 'function') option(scripts, text);
			return text;
		},

		substitute: function(object, regexp) {
			return this.replace(regexp || (/\\?\{([^{}]+)\}/g), function(match, name) {
				if (match.charAt(0) == '\\') return match.slice(1);
				return (object[name] != undefined) ? object[name] : '';
			});
		}

	});

	/*
---

script: Function.js

description: Contains Function Prototypes like create, bind, pass, and delay.

license: MIT-style license.

requires:
- /Native
- /$util

provides: [Function]

...
*/

	Function.implement({

		extend: function(properties) {
			for (var property in properties) this[property] = properties[property];
			return this;
		},

		create: function(options) {
			var self = this;
			options = options || {};
			return function(event) {
				var args = options.arguments;
				args = (args != undefined) ? $splat(args) : Array.slice(arguments, (options.event) ? 1: 0);
				if (options.event) args = [event || window.event].extend(args);
				var returns = function() {
					return self.apply(options.bind || null, args);
				};
				if (options.delay) return setTimeout(returns, options.delay);
				if (options.periodical) return setInterval(returns, options.periodical);
				if (options.attempt) return $try(returns);
				return returns();
			};
		},

		run: function(args, bind) {
			return this.apply(bind, $splat(args));
		},

		pass: function(args, bind) {
			return this.create({ bind: bind, arguments: args });
		},

		bind: function(bind, args) {
			return this.create({ bind: bind, arguments: args });
		},

		bindWithEvent: function(bind, args) {
			return this.create({ bind: bind, arguments: args, event: true });
		},

		attempt: function(args, bind) {
			return this.create({ bind: bind, arguments: args, attempt: true })();
		},

		delay: function(delay, bind, args) {
			return this.create({ bind: bind, arguments: args, delay: delay })();
		},

		periodical: function(periodical, bind, args) {
			return this.create({ bind: bind, arguments: args, periodical: periodical })();
		}

	});

	/*
---

script: Number.js

description: Contains Number Prototypes like limit, round, times, and ceil.

license: MIT-style license.

requires:
- /Native
- /$util

provides: [Number]

...
*/

	Number.implement({

		limit: function(min, max) {
			return Math.min(max, Math.max(min, this));
		},

		round: function(precision) {
			precision = Math.pow(10, precision || 0);
			return Math.round(this * precision) / precision;
		},

		times: function(fn, bind) {
			for (var i = 0; i < this; i++) fn.call(bind, i, this);
		},

		toFloat: function() {
			return parseFloat(this);
		},

		toInt: function(base) {
			return parseInt(this, base || 10);
		}

	});

	Number.alias('times', 'each');

	(function(math) {
		var methods = {};
		math.each(function(name) {
			if (!Number[name]) methods[name] = function() {
				return Math[name].apply(null, [this].concat($A(arguments)));
			};
		});
		Number.implement(methods);
	})(['abs', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'exp', 'floor', 'log', 'max', 'min', 'pow', 'sin', 'sqrt', 'tan']);

	/*
---

script: Hash.js

description: Contains Hash Prototypes. Provides a means for overcoming the JavaScript practical impossibility of extending native Objects.

license: MIT-style license.

requires:
- /Hash.base

provides: [Hash]

...
*/

	Hash.implement({

		has: Object.prototype.hasOwnProperty,

		keyOf: function(value) {
			for (var key in this) {
				if (this.hasOwnProperty(key) && this[key] === value) return key;
			}
			return null;
		},

		hasValue: function(value) {
			return (Hash.keyOf(this, value) !== null);
		},

		extend: function(properties) {
			Hash.each(properties || {}, function(value, key) {
				Hash.set(this, key, value);
			}, this);
			return this;
		},

		combine: function(properties) {
			Hash.each(properties || {}, function(value, key) {
				Hash.include(this, key, value);
			}, this);
			return this;
		},

		erase: function(key) {
			if (this.hasOwnProperty(key)) delete this[key];
			return this;
		},

		get: function(key) {
			return (this.hasOwnProperty(key)) ? this[key] : null;
		},

		set: function(key, value) {
			if (!this[key] || this.hasOwnProperty(key)) this[key] = value;
			return this;
		},

		empty: function() {
			Hash.each(this, function(value, key) {
				delete this[key];
			}, this);
			return this;
		},

		include: function(key, value) {
			if (this[key] == undefined) this[key] = value;
			return this;
		},

		map: function(fn, bind) {
			var results = new Hash;
			Hash.each(this, function(value, key) {
				results.set(key, fn.call(bind, value, key, this));
			}, this);
			return results;
		},

		filter: function(fn, bind) {
			var results = new Hash;
			Hash.each(this, function(value, key) {
				if (fn.call(bind, value, key, this)) results.set(key, value);
			}, this);
			return results;
		},

		every: function(fn, bind) {
			for (var key in this) {
				if (this.hasOwnProperty(key) && ! fn.call(bind, this[key], key)) return false;
			}
			return true;
		},

		some: function(fn, bind) {
			for (var key in this) {
				if (this.hasOwnProperty(key) && fn.call(bind, this[key], key)) return true;
			}
			return false;
		},

		getKeys: function() {
			var keys = [];
			Hash.each(this, function(value, key) {
				keys.push(key);
			});
			return keys;
		},

		getValues: function() {
			var values = [];
			Hash.each(this, function(value) {
				values.push(value);
			});
			return values;
		},

		toQueryString: function(base) {
			var queryString = [];
			Hash.each(this, function(value, key) {
				if (base) key = base + '[' + key + ']';
				var result;
				switch ($type(value)) {
				case 'object': result = Hash.toQueryString(value, key); break;
				case 'array':
					var qs = {};
					value.each(function(val, i) {
						qs[i] = val;
					});
					result = Hash.toQueryString(qs, key);
					break;
				default: result = key + '=' + encodeURIComponent(value);
				}
				if (value != undefined) queryString.push(result);
			});

			return queryString.join('&');
		}

	});

	Hash.alias({ keyOf: 'indexOf', hasValue: 'contains' });

	/*
---

script: Element.js

description: One of the most important items in MooTools. Contains the dollar function, the dollars function, and an handful of cross-browser, time-saver methods to let you easily work with HTML Elements.

license: MIT-style license.

requires:
- /Window
- /Document
- /Array
- /String
- /Function
- /Number
- /Hash

provides: [Element, Elements, $, $$, Iframe]

...
*/

	var Element = new Native({

		name: 'Element',

		legacy: window.Element,

		initialize: function(tag, props) {
			var konstructor = Element.Constructors.get(tag);
			if (konstructor) return konstructor(props);
			if (typeof tag == 'string') return document.newElement(tag, props);
			return document.id(tag).set(props);
		},

		afterImplement: function(key, value) {
			Element.Prototype[key] = value;
			if (Array[key]) return;
			Elements.implement(key, function() {
				var items = [], elements = true;
				for (var i = 0, j = this.length; i < j; i++) {
					var returns = this[i][key].apply(this[i], arguments);
					items.push(returns);
					if (elements) elements = ($type(returns) == 'element');
				}
				return (elements) ? new Elements(items) : items;
			});
		}

	});

	Element.Prototype = { $family: { name: 'element' } };

	Element.Constructors = new Hash;

	var IFrame = new Native({

		name: 'IFrame',

		generics: false,

		initialize: function() {
			var params = Array.link(arguments, { properties: Object.type, iframe: $defined });
			var props = params.properties || {};
			var iframe = document.id(params.iframe);
			var onload = props.onload || $empty;
			delete props.onload;
			props.id = props.name = $pick(props.id, props.name, iframe ? (iframe.id || iframe.name) : 'IFrame_' + $time());
			iframe = new Element(iframe || 'iframe', props);
			var onFrameLoad = function() {
				var host = $try(function() {
					return iframe.contentWindow.location.host;
				});
				if (!host || host == window.location.host) {
					var win = new Window(iframe.contentWindow);
					new Document(iframe.contentWindow.document);
					if (!win.Element.prototype) win.Element.prototype = {};
					$extend(win.Element.prototype, Element.Prototype);
				}
				onload.call(iframe.contentWindow, iframe.contentWindow.document);
			};
			var contentWindow = $try(function() {
				return iframe.contentWindow;
			});
			((contentWindow && contentWindow.document.body) || window.frames[props.id]) ? onFrameLoad() : iframe.addListener('load', onFrameLoad);
			return iframe;
		}

	});

	var Elements = new Native({

		initialize: function(elements, options) {
			options = $extend({ ddup: true, cash: true }, options);
			elements = elements || [];
			if (options.ddup || options.cash) {
				var uniques = {}, returned = [];
				for (var i = 0, l = elements.length; i < l; i++) {
					var el = document.id(elements[i], ! options.cash);
					if (options.ddup) {
						if (uniques[el.uid]) continue;
						uniques[el.uid] = true;
					}
					if (el) returned.push(el);
				}
				elements = returned;
			}
			return (options.cash) ? $extend(elements, this) : elements;
		}

	});

	Elements.implement({

		filter: function(filter, bind) {
			if (!filter) return this;
			return new Elements(Array.filter(this, (typeof filter == 'string') ? function(item) {
				return item.match(filter);
			}: filter, bind));
		}

	});

	Document.implement({

		newElement: function(tag, props) {
			if (Browser.Engine.trident && props) {
				['name', 'type', 'checked'].each(function(attribute) {
					if (!props[attribute]) return;
					tag += ' ' + attribute + '="' + props[attribute] + '"';
					if (attribute != 'checked') delete props[attribute];
				});
				tag = '<' + tag + '>';
			}
			return document.id(this.createElement(tag)).set(props);
		},

		newTextNode: function(text) {
			return this.createTextNode(text);
		},

		getDocument: function() {
			return this;
		},

		getWindow: function() {
			return this.window;
		},

		id: (function() {

			var types = {

				string: function(id, nocash, doc) {
					id = doc.getElementById(id);
					return (id) ? types.element(id, nocash) : null;
				},

				element: function(el, nocash) {
					$uid(el);
					if (!nocash && ! el.$family && ! (/^object|embed$/i).test(el.tagName)) {
						var proto = Element.Prototype;
						for (var p in proto) el[p] = proto[p];
					};
					return el;
				},

				object: function(obj, nocash, doc) {
					if (obj.toElement) return types.element(obj.toElement(doc), nocash);
					return null;
				}

			};

			types.textnode = types.whitespace = types.window = types.document = $arguments(0);

			return function(el, nocash, doc) {
				if (el && el.$family && el.uid) return el;
				var type = $type(el);
				return (types[type]) ? types[type](el, nocash, doc || document) : null;
			};

		})()

	});

	if (window.$ == null) Window.implement({
		$: function(el, nc) {
			return document.id(el, nc, this.document);
		}
	});

	Window.implement({

		$$: function(selector) {
			if (arguments.length == 1 && typeof selector == 'string') return this.document.getElements(selector);
			var elements = [];
			var args = Array.flatten(arguments);
			for (var i = 0, l = args.length; i < l; i++) {
				var item = args[i];
				switch ($type(item)) {
				case 'element': elements.push(item); break;
				case 'string': elements.extend(this.document.getElements(item, true));
				}
			}
			return new Elements(elements);
		},

		getDocument: function() {
			return this.document;
		},

		getWindow: function() {
			return this;
		}

	});

	Native.implement([Element, Document], {

		getElement: function(selector, nocash) {
			return document.id(this.getElements(selector, true)[0] || null, nocash);
		},

		getElements: function(tags, nocash) {
			tags = tags.split(',');
			var elements = [];
			var ddup = (tags.length > 1);
			tags.each(function(tag) {
				var partial = this.getElementsByTagName(tag.trim());
				(ddup) ? elements.extend(partial) : elements = partial;
			}, this);
			return new Elements(elements, { ddup: ddup, cash: ! nocash });
		}

	});

	(function() {

		var collected = {}, storage = {};
		var props = { input: 'checked', option: 'selected', textarea: (Browser.Engine.webkit && Browser.Engine.version < 420) ? 'innerHTML': 'value' };

		var get = function(uid) {
			return (storage[uid] || (storage[uid] = {}));
		};

		var clean = function(item, retain) {
			if (!item) return;
			var uid = item.uid;
			if (Browser.Engine.trident) {
				if (item.clearAttributes) {
					var clone = retain && item.cloneNode(false);
					item.clearAttributes();
					if (clone) item.mergeAttributes(clone);
				} else if (item.removeEvents) {
					item.removeEvents();
				}
				if ((/object/i).test(item.tagName)) {
					for (var p in item) {
						if (typeof item[p] == 'function') item[p] = $empty;
					}
					Element.dispose(item);
				}
			}
			if (!uid) return;
			collected[uid] = storage[uid] = null;
		};

		var purge = function() {
			Hash.each(collected, clean);
			if (Browser.Engine.trident) $A(document.getElementsByTagName('object')).each(clean);
			if (window.CollectGarbage) CollectGarbage();
			collected = storage = null;
		};

		var walk = function(element, walk, start, match, all, nocash) {
			var el = element[start || walk];
			var elements = [];
			while (el) {
				if (el.nodeType == 1 && (!match || Element.match(el, match))) {
					if (!all) return document.id(el, nocash);
					elements.push(el);
				}
				el = el[walk];
			}
			return (all) ? new Elements(elements, { ddup: false, cash: ! nocash }) : null;
		};

		var attributes = {
			'html': 'innerHTML',
			'class': 'className',
			'for': 'htmlFor',
			'defaultValue': 'defaultValue',
			'text': (Browser.Engine.trident || (Browser.Engine.webkit && Browser.Engine.version < 420)) ? 'innerText': 'textContent'
		};
		var bools = ['compact', 'nowrap', 'ismap', 'declare', 'noshade', 'checked', 'disabled', 'readonly', 'multiple', 'selected', 'noresize', 'defer'];
		var camels = ['value', 'type', 'defaultValue', 'accessKey', 'cellPadding', 'cellSpacing', 'colSpan', 'frameBorder', 'maxLength', 'readOnly', 'rowSpan', 'tabIndex', 'useMap'];

		bools = bools.associate(bools);

		Hash.extend(attributes, bools);
		Hash.extend(attributes, camels.associate(camels.map(String.toLowerCase)));

		var inserters = {

			before: function(context, element) {
				if (element.parentNode) element.parentNode.insertBefore(context, element);
			},

			after: function(context, element) {
				if (!element.parentNode) return;
				var next = element.nextSibling;
				(next) ? element.parentNode.insertBefore(context, next) : element.parentNode.appendChild(context);
			},

			bottom: function(context, element) {
				element.appendChild(context);
			},

			top: function(context, element) {
				var first = element.firstChild;
				(first) ? element.insertBefore(context, first) : element.appendChild(context);
			}

		};

		inserters.inside = inserters.bottom;

		Hash.each(inserters, function(inserter, where) {

			where = where.capitalize();

			Element.implement('inject' + where, function(el) {
				inserter(this, document.id(el, true));
				return this;
			});

			Element.implement('grab' + where, function(el) {
				inserter(document.id(el, true), this);
				return this;
			});

		});

		Element.implement({

			set: function(prop, value) {
				switch ($type(prop)) {
				case 'object':
					for (var p in prop) this.set(p, prop[p]);
					break;
				case 'string':
					var property = Element.Properties.get(prop);
					(property && property.set) ? property.set.apply(this, Array.slice(arguments, 1)) : this.setProperty(prop, value);
				}
				return this;
			},

			get: function(prop) {
				var property = Element.Properties.get(prop);
				return (property && property.get) ? property.get.apply(this, Array.slice(arguments, 1)) : this.getProperty(prop);
			},

			erase: function(prop) {
				var property = Element.Properties.get(prop);
				(property && property.erase) ? property.erase.apply(this) : this.removeProperty(prop);
				return this;
			},

			setProperty: function(attribute, value) {
				var key = attributes[attribute];
				if (value == undefined) return this.removeProperty(attribute);
				if (key && bools[attribute]) value = !! value;
				(key) ? this[key] = value: this.setAttribute(attribute, '' + value);
				return this;
			},

			setProperties: function(attributes) {
				for (var attribute in attributes) this.setProperty(attribute, attributes[attribute]);
				return this;
			},

			getProperty: function(attribute) {
				var key = attributes[attribute];
				var value = (key) ? this[key] : this.getAttribute(attribute, 2);
				return (bools[attribute]) ? !! value: (key) ? value: value || null;
			},

			getProperties: function() {
				var args = $A(arguments);
				return args.map(this.getProperty, this).associate(args);
			},

			removeProperty: function(attribute) {
				var key = attributes[attribute];
				(key) ? this[key] = (key && bools[attribute]) ? false: '': this.removeAttribute(attribute);
				return this;
			},

			removeProperties: function() {
				Array.each(arguments, this.removeProperty, this);
				return this;
			},

			hasClass: function(className) {
				return this.className.contains(className, ' ');
			},

			addClass: function(className) {
				if (!this.hasClass(className)) this.className = (this.className + ' ' + className).clean();
				return this;
			},

			removeClass: function(className) {
				this.className = this.className.replace(new RegExp('(^|\\s)' + className + '(?:\\s|$)'), '$1');
				return this;
			},

			toggleClass: function(className) {
				return this.hasClass(className) ? this.removeClass(className) : this.addClass(className);
			},

			adopt: function() {
				Array.flatten(arguments).each(function(element) {
					element = document.id(element, true);
					if (element) this.appendChild(element);
				}, this);
				return this;
			},

			appendText: function(text, where) {
				return this.grab(this.getDocument().newTextNode(text), where);
			},

			grab: function(el, where) {
				inserters[where || 'bottom'](document.id(el, true), this);
				return this;
			},

			inject: function(el, where) {
				inserters[where || 'bottom'](this, document.id(el, true));
				return this;
			},

			replaces: function(el) {
				el = document.id(el, true);
				el.parentNode.replaceChild(this, el);
				return this;
			},

			wraps: function(el, where) {
				el = document.id(el, true);
				return this.replaces(el).grab(el, where);
			},

			getPrevious: function(match, nocash) {
				return walk(this, 'previousSibling', null, match, false, nocash);
			},

			getAllPrevious: function(match, nocash) {
				return walk(this, 'previousSibling', null, match, true, nocash);
			},

			getNext: function(match, nocash) {
				return walk(this, 'nextSibling', null, match, false, nocash);
			},

			getAllNext: function(match, nocash) {
				return walk(this, 'nextSibling', null, match, true, nocash);
			},

			getFirst: function(match, nocash) {
				return walk(this, 'nextSibling', 'firstChild', match, false, nocash);
			},

			getLast: function(match, nocash) {
				return walk(this, 'previousSibling', 'lastChild', match, false, nocash);
			},

			getParent: function(match, nocash) {
				return walk(this, 'parentNode', null, match, false, nocash);
			},

			getParents: function(match, nocash) {
				return walk(this, 'parentNode', null, match, true, nocash);
			},

			getSiblings: function(match, nocash) {
				return this.getParent().getChildren(match, nocash).erase(this);
			},

			getChildren: function(match, nocash) {
				return walk(this, 'nextSibling', 'firstChild', match, true, nocash);
			},

			getWindow: function() {
				return this.ownerDocument.window;
			},

			getDocument: function() {
				return this.ownerDocument;
			},

			getElementById: function(id, nocash) {
				var el = this.ownerDocument.getElementById(id);
				if (!el) return null;
				for (var parent = el.parentNode; parent != this; parent = parent.parentNode) {
					if (!parent) return null;
				}
				return document.id(el, nocash);
			},

			getSelected: function() {
				return new Elements($A(this.options).filter(function(option) {
					return option.selected;
				}));
			},

			getComputedStyle: function(property) {
				if (this.currentStyle) return this.currentStyle[property.camelCase()];
				var computed = this.getDocument().defaultView.getComputedStyle(this, null);
				return (computed) ? computed.getPropertyValue([property.hyphenate()]) : null;
			},

			toQueryString: function() {
				var queryString = [];
				this.getElements('input, select, textarea', true).each(function(el) {
					if (!el.name || el.disabled || el.type == 'submit' || el.type == 'reset' || el.type == 'file') return;
					var value = (el.tagName.toLowerCase() == 'select') ? Element.getSelected(el).map(function(opt) {
						return opt.value;
					}) : ((el.type == 'radio' || el.type == 'checkbox') && ! el.checked) ? null: el.value;
					$splat(value).each(function(val) {
						if (typeof val != 'undefined') queryString.push(el.name + '=' + encodeURIComponent(val));
					});
				});
				return queryString.join('&');
			},

			clone: function(contents, keepid) {
				contents = contents !== false;
				var clone = this.cloneNode(contents);
				var clean = function(node, element) {
					if (!keepid) node.removeAttribute('id');
					if (Browser.Engine.trident) {
						node.clearAttributes();
						node.mergeAttributes(element);
						node.removeAttribute('uid');
						if (node.options) {
							var no = node.options, eo = element.options;
							for (var j = no.length; j--;) no[j].selected = eo[j].selected;
						}
					}
					var prop = props[element.tagName.toLowerCase()];
					if (prop && element[prop]) node[prop] = element[prop];
				};

				if (contents) {
					var ce = clone.getElementsByTagName('*'), te = this.getElementsByTagName('*');
					for (var i = ce.length; i--;) clean(ce[i], te[i]);
				}

				clean(clone, this);
				return document.id(clone);
			},

			destroy: function() {
				Element.empty(this);
				Element.dispose(this);
				clean(this, true);
				return null;
			},

			empty: function() {
				$A(this.childNodes).each(function(node) {
					Element.destroy(node);
				});
				return this;
			},

			dispose: function() {
				return (this.parentNode) ? this.parentNode.removeChild(this) : this;
			},

			hasChild: function(el) {
				el = document.id(el, true);
				if (!el) return false;
				if (Browser.Engine.webkit && Browser.Engine.version < 420) return $A(this.getElementsByTagName(el.tagName)).contains(el);
				return (this.contains) ? (this != el && this.contains(el)) : !! (this.compareDocumentPosition(el) & 16);
			},

			match: function(tag) {
				return (!tag || (tag == this) || (Element.get(this, 'tag') == tag));
			}

		});

		Native.implement([Element, Window, Document], {

			addListener: function(type, fn) {
				if (type == 'unload') {
					var old = fn, self = this;
					fn = function() {
						self.removeListener('unload', fn);
						old();
					};
				} else {
					collected[this.uid] = this;
				}
				if (this.addEventListener) this.addEventListener(type, fn, false);
				else this.attachEvent('on' + type, fn);
				return this;
			},

			removeListener: function(type, fn) {
				if (this.removeEventListener) this.removeEventListener(type, fn, false);
				else this.detachEvent('on' + type, fn);
				return this;
			},

			retrieve: function(property, dflt) {
				var storage = get(this.uid), prop = storage[property];
				if (dflt != undefined && prop == undefined) prop = storage[property] = dflt;
				return $pick(prop);
			},

			store: function(property, value) {
				var storage = get(this.uid);
				storage[property] = value;
				return this;
			},

			eliminate: function(property) {
				var storage = get(this.uid);
				delete storage[property];
				return this;
			}

		});

		window.addListener('unload', purge);

	})();

	Element.Properties = new Hash;

	Element.Properties.style = {

		set: function(style) {
			this.style.cssText = style;
		},

		get: function() {
			return this.style.cssText;
		},

		erase: function() {
			this.style.cssText = '';
		}

	};

	Element.Properties.tag = {

		get: function() {
			return this.tagName.toLowerCase();
		}

	};

	Element.Properties.html = (function() {
		var wrapper = document.createElement('div');

		var translations = {
			table: [1, '<table>', '</table>'],
			select: [1, '<select>', '</select>'],
			tbody: [2, '<table><tbody>', '</tbody></table>'],
			tr: [3, '<table><tbody><tr>', '</tr></tbody></table>']
		};
		translations.thead = translations.tfoot = translations.tbody;

		var html = {
			set: function() {
				var html = Array.flatten(arguments).join('');
				var wrap = Browser.Engine.trident && translations[this.get('tag')];
				if (wrap) {
					var first = wrapper;
					first.innerHTML = wrap[1] + html + wrap[2];
					for (var i = wrap[0]; i--;) first = first.firstChild;
					this.empty().adopt(first.childNodes);
				} else {
					this.innerHTML = html;
				}
			}
		};

		html.erase = html.set;

		return html;
	})();

	if (Browser.Engine.webkit && Browser.Engine.version < 420) Element.Properties.text = {
		get: function() {
			if (this.innerText) return this.innerText;
			var temp = this.ownerDocument.newElement('div', { html: this.innerHTML }).inject(this.ownerDocument.body);
			var text = temp.innerText;
			temp.destroy();
			return text;
		}
	};

	/*
---

script: Element.Style.js

description: Contains methods for interacting with the styles of Elements in a fashionable way.

license: MIT-style license.

requires:
- /Element

provides: [Element.Style]

...
*/

	Element.Properties.styles = { set: function(styles) {
			this.setStyles(styles);
	} };

	Element.Properties.opacity = {

		set: function(opacity, novisibility) {
			if (!novisibility) {
				if (opacity == 0) {
					if (this.style.visibility != 'hidden') this.style.visibility = 'hidden';
				} else {
					if (this.style.visibility != 'visible') this.style.visibility = 'visible';
				}
			}
			if (!this.currentStyle || ! this.currentStyle.hasLayout) this.style.zoom = 1;
			if (Browser.Engine.trident) this.style.filter = (opacity == 1) ? '': 'alpha(opacity=' + opacity * 100 + ')';
			this.style.opacity = opacity;
			this.store('opacity', opacity);
		},

		get: function() {
			return this.retrieve('opacity', 1);
		}

	};

	Element.implement({

		setOpacity: function(value) {
			return this.set('opacity', value, true);
		},

		getOpacity: function() {
			return this.get('opacity');
		},

		setStyle: function(property, value) {
			switch (property) {
			case 'opacity': return this.set('opacity', parseFloat(value));
			case 'float': property = (Browser.Engine.trident) ? 'styleFloat': 'cssFloat';
			}
			property = property.camelCase();
			if ($type(value) != 'string') {
				var map = (Element.Styles.get(property) || '@').split(' ');
				value = $splat(value).map(function(val, i) {
					if (!map[i]) return '';
					return ($type(val) == 'number') ? map[i].replace('@', Math.round(val)) : val;
				}).join(' ');
			} else if (value == String(Number(value))) {
				value = Math.round(value);
			}
			this.style[property] = value;
			return this;
		},

		getStyle: function(property) {
			switch (property) {
			case 'opacity': return this.get('opacity');
			case 'float': property = (Browser.Engine.trident) ? 'styleFloat': 'cssFloat';
			}
			property = property.camelCase();
			var result = this.style[property];
			if (!$chk(result)) {
				result = [];
				for (var style in Element.ShortStyles) {
					if (property != style) continue;
					for (var s in Element.ShortStyles[style]) result.push(this.getStyle(s));
					return result.join(' ');
				}
				result = this.getComputedStyle(property);
			}
			if (result) {
				result = String(result);
				var color = result.match(/rgba?\([\d\s,]+\)/);
				if (color) result = result.replace(color[0], color[0].rgbToHex());
			}
			if (Browser.Engine.presto || (Browser.Engine.trident && ! $chk(parseInt(result, 10)))) {
				if (property.test(/^(height|width)$/)) {
					var values = (property == 'width') ? ['left', 'right'] : ['top', 'bottom'], size = 0;
					values.each(function(value) {
						size += this.getStyle('border-' + value + '-width').toInt() + this.getStyle('padding-' + value).toInt();
					}, this);
					return this['offset' + property.capitalize()] - size + 'px';
				}
				if ((Browser.Engine.presto) && String(result).test('px')) return result;
				if (property.test(/(border(.+)Width|margin|padding)/)) return '0px';
			}
			return result;
		},

		setStyles: function(styles) {
			for (var style in styles) this.setStyle(style, styles[style]);
			return this;
		},

		getStyles: function() {
			var result = {};
			Array.flatten(arguments).each(function(key) {
				result[key] = this.getStyle(key);
			}, this);
			return result;
		}

	});

	Element.Styles = new Hash({
		left: '@px', top: '@px', bottom: '@px', right: '@px',
		width: '@px', height: '@px', maxWidth: '@px', maxHeight: '@px', minWidth: '@px', minHeight: '@px',
		backgroundColor: 'rgb(@, @, @)', backgroundPosition: '@px @px', color: 'rgb(@, @, @)',
		fontSize: '@px', letterSpacing: '@px', lineHeight: '@px', clip: 'rect(@px @px @px @px)',
		margin: '@px @px @px @px', padding: '@px @px @px @px', border: '@px @ rgb(@, @, @) @px @ rgb(@, @, @) @px @ rgb(@, @, @)',
		borderWidth: '@px @px @px @px', borderStyle: '@ @ @ @', borderColor: 'rgb(@, @, @) rgb(@, @, @) rgb(@, @, @) rgb(@, @, @)',
		zIndex: '@', 'zoom': '@', fontWeight: '@', textIndent: '@px', opacity: '@'
	});

	Element.ShortStyles = { margin: {}, padding: {}, border: {}, borderWidth: {}, borderStyle: {}, borderColor: {} };

	['Top', 'Right', 'Bottom', 'Left'].each(function(direction) {
		var Short = Element.ShortStyles;
		var All = Element.Styles;
		['margin', 'padding'].each(function(style) {
			var sd = style + direction;
			Short[style][sd] = All[sd] = '@px';
		});
		var bd = 'border' + direction;
		Short.border[bd] = All[bd] = '@px @ rgb(@, @, @)';
		var bdw = bd + 'Width', bds = bd + 'Style', bdc = bd + 'Color';
		Short[bd] = {};
		Short.borderWidth[bdw] = Short[bd][bdw] = All[bdw] = '@px';
		Short.borderStyle[bds] = Short[bd][bds] = All[bds] = '@';
		Short.borderColor[bdc] = Short[bd][bdc] = All[bdc] = 'rgb(@, @, @)';
	});

	/*
---

script: Element.Dimensions.js

description: Contains methods to work with size, scroll, or positioning of Elements and the window object.

license: MIT-style license.

credits:
- Element positioning based on the [qooxdoo](http://qooxdoo.org/) code and smart browser fixes, [LGPL License](http://www.gnu.org/licenses/lgpl.html).
- Viewport dimensions based on [YUI](http://developer.yahoo.com/yui/) code, [BSD License](http://developer.yahoo.com/yui/license.html).

requires:
- /Element

provides: [Element.Dimensions]

...
*/

	(function() {

		Element.implement({

			scrollTo: function(x, y) {
				if (isBody(this)) {
					this.getWindow().scrollTo(x, y);
				} else {
					this.scrollLeft = x;
					this.scrollTop = y;
				}
				return this;
			},

			getSize: function() {
				if (isBody(this)) return this.getWindow().getSize();
				return { x: this.offsetWidth, y: this.offsetHeight };
			},

			getScrollSize: function() {
				if (isBody(this)) return this.getWindow().getScrollSize();
				return { x: this.scrollWidth, y: this.scrollHeight };
			},

			getScroll: function() {
				if (isBody(this)) return this.getWindow().getScroll();
				return { x: this.scrollLeft, y: this.scrollTop };
			},

			getScrolls: function() {
				var element = this, position = { x: 0, y: 0 };
				while (element && ! isBody(element)) {
					position.x += element.scrollLeft;
					position.y += element.scrollTop;
					element = element.parentNode;
				}
				return position;
			},

			getOffsetParent: function() {
				var element = this;
				if (isBody(element)) return null;
				if (!Browser.Engine.trident) return element.offsetParent;
				while ((element = element.parentNode) && ! isBody(element)) {
					if (styleString(element, 'position') != 'static') return element;
				}
				return null;
			},

			getOffsets: function() {
				if (this.getBoundingClientRect) {
					var bound = this.getBoundingClientRect(),
					html = document.id(this.getDocument().documentElement),
					//htmlScroll = html.getScroll(),
					htmlScroll = { x: 0, y: 0 },
					elemScrolls = this.getScrolls(),
					elemScroll = this.getScroll(),
					isFixed = (styleString(this, 'position') == 'fixed');

					return {
						x: bound.left.toInt() + elemScrolls.x - elemScroll.x + ((isFixed) ? 0: htmlScroll.x) - html.clientLeft,
						y: bound.top.toInt() + elemScrolls.y - elemScroll.y + ((isFixed) ? 0: htmlScroll.y) - html.clientTop
					};
				}

				var element = this, position = { x: 0, y: 0 };
				if (isBody(this)) return position;

				while (element && ! isBody(element)) {
					position.x += element.offsetLeft;
					position.y += element.offsetTop;

					if (Browser.Engine.gecko) {
						if (!borderBox(element)) {
							position.x += leftBorder(element);
							position.y += topBorder(element);
						}
						var parent = element.parentNode;
						if (parent && styleString(parent, 'overflow') != 'visible') {
							position.x += leftBorder(parent);
							position.y += topBorder(parent);
						}
					} else if (element != this && Browser.Engine.webkit) {
						position.x += leftBorder(element);
						position.y += topBorder(element);
					}

					element = element.offsetParent;
				}
				if (Browser.Engine.gecko && ! borderBox(this)) {
					position.x -= leftBorder(this);
					position.y -= topBorder(this);
				}
				return position;
			},

			getPosition: function(relative) {
				if (isBody(this)) return { x: 0, y: 0 };
				var offset = this.getOffsets(),
				scroll = this.getScrolls();
				var position = {
					x: offset.x - scroll.x,
					y: offset.y - scroll.y
				};
				var relativePosition = (relative && (relative = document.id(relative))) ? relative.getPosition() : { x: 0, y: 0 };
				return { x: position.x - relativePosition.x, y: position.y - relativePosition.y };
			},

			getCoordinates: function(element) {
				if (isBody(this)) return this.getWindow().getCoordinates();
				var position = this.getPosition(element),
				size = this.getSize();
				var obj = {
					left: position.x,
					top: position.y,
					width: size.x,
					height: size.y
				};
				obj.right = obj.left + obj.width;
				obj.bottom = obj.top + obj.height;
				return obj;
			},

			computePosition: function(obj) {
				return {
					left: obj.x - styleNumber(this, 'margin-left'),
					top: obj.y - styleNumber(this, 'margin-top')
				};
			},

			setPosition: function(obj) {
				return this.setStyles(this.computePosition(obj));
			}

		});

		Native.implement([Document, Window], {

			getSize: function() {
				if (Browser.Engine.presto || Browser.Engine.webkit) {
					var win = this.getWindow();
					return { x: win.innerWidth, y: win.innerHeight };
				}
				var doc = getCompatElement(this);
				return { x: doc.clientWidth, y: doc.clientHeight };
			},

			getScroll: function() {
				var win = this.getWindow(), doc = getCompatElement(this);
				return { x: win.pageXOffset || doc.scrollLeft, y: win.pageYOffset || doc.scrollTop };
			},

			getScrollSize: function() {
				var doc = getCompatElement(this), min = this.getSize();
				return { x: Math.max(doc.scrollWidth, min.x), y: Math.max(doc.scrollHeight, min.y) };
			},

			getPosition: function() {
				return { x: 0, y: 0 };
			},

			getCoordinates: function() {
				var size = this.getSize();
				return { top: 0, left: 0, bottom: size.y, right: size.x, height: size.y, width: size.x };
			}

		});

		// private methods
		var styleString = Element.getComputedStyle;

		function styleNumber(element, style) {
			return styleString(element, style).toInt() || 0;
		};

		function borderBox(element) {
			return styleString(element, '-moz-box-sizing') == 'border-box';
		};

		function topBorder(element) {
			return styleNumber(element, 'border-top-width');
		};

		function leftBorder(element) {
			return styleNumber(element, 'border-left-width');
		};

		function isBody(element) {
			return (/^(?:body|html)$/i).test(element.tagName);
		};

		function getCompatElement(element) {
			var doc = element.getDocument();
			return (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html: doc.body;
		};

	})();

	//aliases
	Element.alias('setPosition', 'position'); //compatability
	Native.implement([Window, Document, Element], {

		getHeight: function() {
			return this.getSize().y;
		},

		getWidth: function() {
			return this.getSize().x;
		},

		getScrollTop: function() {
			return this.getScroll().y;
		},

		getScrollLeft: function() {
			return this.getScroll().x;
		},

		getScrollHeight: function() {
			return this.getScrollSize().y;
		},

		getScrollWidth: function() {
			return this.getScrollSize().x;
		},

		getTop: function() {
			return this.getPosition().y;
		},

		getLeft: function() {
			return this.getPosition().x;
		}

	});

	/*
---

script: Selectors.js

description: Adds advanced CSS-style querying capabilities for targeting HTML Elements. Includes pseudo selectors.

license: MIT-style license.

requires:
- /Element

provides: [Selectors]

...
*/

	Native.implement([Document, Element], {

		getElements: function(expression, nocash) {
			expression = expression.split(',');
			var items, local = {};
			for (var i = 0, l = expression.length; i < l; i++) {
				var selector = expression[i], elements = Selectors.Utils.search(this, selector, local);
				if (i != 0 && elements.item) elements = $A(elements);
				items = (i == 0) ? elements: (items.item) ? $A(items).concat(elements) : items.concat(elements);
			}
			return new Elements(items, { ddup: (expression.length > 1), cash: ! nocash });
		}

	});

	Element.implement({

		match: function(selector) {
			if (!selector || (selector == this)) return true;
			var tagid = Selectors.Utils.parseTagAndID(selector);
			var tag = tagid[0], id = tagid[1];
			if (!Selectors.Filters.byID(this, id) || ! Selectors.Filters.byTag(this, tag)) return false;
			var parsed = Selectors.Utils.parseSelector(selector);
			return (parsed) ? Selectors.Utils.filter(this, parsed, {}) : true;
		}

	});

	var Selectors = { Cache: { nth: {}, parsed: {} } };

	Selectors.RegExps = {
		id: (/#([\w-]+)/),
		tag: (/^(\w+|\*)/),
		quick: (/^(\w+|\*)$/),
		splitter: (/\s*([+>~\s])\s*([a-zA-Z#.*:\[])/g),
		combined: (/\.([\w-]+)|\[(\w+)(?:([!*^$~|]?=)(["']?)([^\4]*?)\4)?\]|:([\w-]+)(?:\(["']?(.*?)?["']?\)|$)/g)
	};

	Selectors.Utils = {

		chk: function(item, uniques) {
			if (!uniques) return true;
			var uid = $uid(item);
			if (!uniques[uid]) return uniques[uid] = true;
			return false;
		},

		parseNthArgument: function(argument) {
			if (Selectors.Cache.nth[argument]) return Selectors.Cache.nth[argument];
			var parsed = argument.match(/^([+-]?\d*)?([a-z]+)?([+-]?\d*)?$/);
			if (!parsed) return false;
			var inta = parseInt(parsed[1], 10);
			var a = (inta || inta === 0) ? inta: 1;
			var special = parsed[2] || false;
			var b = parseInt(parsed[3], 10) || 0;
			if (a != 0) {
				b--;
				while (b < 1) b += a;
				while (b >= a) b -= a;
			} else {
				a = b;
				special = 'index';
			}
			switch (special) {
			case 'n': parsed = { a: a, b: b, special: 'n' }; break;
			case 'odd': parsed = { a: 2, b: 0, special: 'n' }; break;
			case 'even': parsed = { a: 2, b: 1, special: 'n' }; break;
			case 'first': parsed = { a: 0, special: 'index' }; break;
			case 'last': parsed = { special: 'last-child' }; break;
			case 'only': parsed = { special: 'only-child' }; break;
			default: parsed = { a: (a - 1), special: 'index' }; 
			}

			return Selectors.Cache.nth[argument] = parsed;
		},

		parseSelector: function(selector) {
			if (Selectors.Cache.parsed[selector]) return Selectors.Cache.parsed[selector];
			var m, parsed = { classes: [], pseudos: [], attributes: [] };
			while ((m = Selectors.RegExps.combined.exec(selector))) {
				var cn = m[1], an = m[2], ao = m[3], av = m[5], pn = m[6], pa = m[7];
				if (cn) {
					parsed.classes.push(cn);
				} else if (pn) {
					var parser = Selectors.Pseudo.get(pn);
					if (parser) parsed.pseudos.push({ parser: parser, argument: pa });
					else parsed.attributes.push({ name: pn, operator: '=', value: pa });
				} else if (an) {
					parsed.attributes.push({ name: an, operator: ao, value: av });
				}
			}
			if (!parsed.classes.length) delete parsed.classes;
			if (!parsed.attributes.length) delete parsed.attributes;
			if (!parsed.pseudos.length) delete parsed.pseudos;
			if (!parsed.classes && ! parsed.attributes && ! parsed.pseudos) parsed = null;
			return Selectors.Cache.parsed[selector] = parsed;
		},

		parseTagAndID: function(selector) {
			var tag = selector.match(Selectors.RegExps.tag);
			var id = selector.match(Selectors.RegExps.id);
			return [(tag) ? tag[1] : '*', (id) ? id[1] : false];
		},

		filter: function(item, parsed, local) {
			var i;
			if (parsed.classes) {
				for (i = parsed.classes.length; i--; i) {
					var cn = parsed.classes[i];
					if (!Selectors.Filters.byClass(item, cn)) return false;
				}
			}
			if (parsed.attributes) {
				for (i = parsed.attributes.length; i--; i) {
					var att = parsed.attributes[i];
					if (!Selectors.Filters.byAttribute(item, att.name, att.operator, att.value)) return false;
				}
			}
			if (parsed.pseudos) {
				for (i = parsed.pseudos.length; i--; i) {
					var psd = parsed.pseudos[i];
					if (!Selectors.Filters.byPseudo(item, psd.parser, psd.argument, local)) return false;
				}
			}
			return true;
		},

		getByTagAndID: function(ctx, tag, id) {
			if (id) {
				var item = (ctx.getElementById) ? ctx.getElementById(id, true) : Element.getElementById(ctx, id, true);
				return (item && Selectors.Filters.byTag(item, tag)) ? [item] : [];
			} else {
				return ctx.getElementsByTagName(tag);
			}
		},

		search: function(self, expression, local) {
			var splitters = [];

			var selectors = expression.trim().replace(Selectors.RegExps.splitter, function(m0, m1, m2) {
				splitters.push(m1);
				return ':)' + m2;
			}).split(':)');

			var items, filtered, item;

			for (var i = 0, l = selectors.length; i < l; i++) {

				var selector = selectors[i];

				if (i == 0 && Selectors.RegExps.quick.test(selector)) {
					items = self.getElementsByTagName(selector);
					continue;
				}

				var splitter = splitters[i - 1];

				var tagid = Selectors.Utils.parseTagAndID(selector);
				var tag = tagid[0], id = tagid[1];

				if (i == 0) {
					items = Selectors.Utils.getByTagAndID(self, tag, id);
				} else {
					var uniques = {}, found = [];
					for (var j = 0, k = items.length; j < k; j++) found = Selectors.Getters[splitter](found, items[j], tag, id, uniques);
					items = found;
				}

				var parsed = Selectors.Utils.parseSelector(selector);

				if (parsed) {
					filtered = [];
					for (var m = 0, n = items.length; m < n; m++) {
						item = items[m];
						if (Selectors.Utils.filter(item, parsed, local)) filtered.push(item);
					}
					items = filtered;
				}

			}

			return items;

		}

	};

	Selectors.Getters = {

		' ': function(found, self, tag, id, uniques) {
			var items = Selectors.Utils.getByTagAndID(self, tag, id);
			for (var i = 0, l = items.length; i < l; i++) {
				var item = items[i];
				if (Selectors.Utils.chk(item, uniques)) found.push(item);
			}
			return found;
		},

		'>': function(found, self, tag, id, uniques) {
			var children = Selectors.Utils.getByTagAndID(self, tag, id);
			for (var i = 0, l = children.length; i < l; i++) {
				var child = children[i];
				if (child.parentNode == self && Selectors.Utils.chk(child, uniques)) found.push(child);
			}
			return found;
		},

		'+': function(found, self, tag, id, uniques) {
			while ((self = self.nextSibling)) {
				if (self.nodeType == 1) {
					if (Selectors.Utils.chk(self, uniques) && Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
					break;
				}
			}
			return found;
		},

		'~': function(found, self, tag, id, uniques) {
			while ((self = self.nextSibling)) {
				if (self.nodeType == 1) {
					if (!Selectors.Utils.chk(self, uniques)) break;
					if (Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
				}
			}
			return found;
		}

	};

	Selectors.Filters = {

		byTag: function(self, tag) {
			return (tag == '*' || (self.tagName && self.tagName.toLowerCase() == tag));
		},

		byID: function(self, id) {
			return (!id || (self.id && self.id == id));
		},

		byClass: function(self, klass) {
			return (self.className && self.className.contains && self.className.contains(klass, ' '));
		},

		byPseudo: function(self, parser, argument, local) {
			return parser.call(self, argument, local);
		},

		byAttribute: function(self, name, operator, value) {
			var result = Element.prototype.getProperty.call(self, name);
			if (!result) return (operator == '!=');
			if (!operator || value == undefined) return true;
			switch (operator) {
			case '=': return (result == value);
			case '*=': return (result.contains(value));
			case '^=': return (result.substr(0, value.length) == value);
			case '$=': return (result.substr(result.length - value.length) == value);
			case '!=': return (result != value);
			case '~=': return result.contains(value, ' ');
			case '|=': return result.contains(value, '-');
			}
			return false;
		}

	};

	Selectors.Pseudo = new Hash({

		// w3c pseudo selectors
		checked: function() {
			return this.checked;
		},

		empty: function() {
			return ! (this.innerText || this.textContent || '').length;
		},

		not: function(selector) {
			return ! Element.match(this, selector);
		},

		contains: function(text) {
			return (this.innerText || this.textContent || '').contains(text);
		},

		'first-child': function() {
			return Selectors.Pseudo.index.call(this, 0);
		},

		'last-child': function() {
			var element = this;
			while ((element = element.nextSibling)) {
				if (element.nodeType == 1) return false;
			}
			return true;
		},

		'only-child': function() {
			var prev = this;
			while ((prev = prev.previousSibling)) {
				if (prev.nodeType == 1) return false;
			}
			var next = this;
			while ((next = next.nextSibling)) {
				if (next.nodeType == 1) return false;
			}
			return true;
		},

		'nth-child': function(argument, local) {
			argument = (argument == undefined) ? 'n': argument;
			var parsed = Selectors.Utils.parseNthArgument(argument);
			if (parsed.special != 'n') return Selectors.Pseudo[parsed.special].call(this, parsed.a, local);
			var count = 0;
			local.positions = local.positions || {};
			var uid = $uid(this);
			if (!local.positions[uid]) {
				var self = this;
				while ((self = self.previousSibling)) {
					if (self.nodeType != 1) continue;
					count++;
					var position = local.positions[$uid(self)];
					if (position != undefined) {
						count = position + count;
						break;
					}
				}
				local.positions[uid] = count;
			}
			return (local.positions[uid] % parsed.a == parsed.b);
		},

		// custom pseudo selectors

		index: function(index) {
			var element = this, count = 0;
			while ((element = element.previousSibling)) {
				if (element.nodeType == 1 && ++count > index) return false;
			}
			return (count == index);
		},

		even: function(argument, local) {
			return Selectors.Pseudo['nth-child'].call(this, '2n+1', local);
		},

		odd: function(argument, local) {
			return Selectors.Pseudo['nth-child'].call(this, '2n', local);
		},

		selected: function() {
			return this.selected;
		},

		enabled: function() {
			return (this.disabled === false);
		}

	});

	/*
---

script: Event.js

description: Contains the Event Class, to make the event object cross-browser.

license: MIT-style license.

requires:
- /Window
- /Document
- /Hash
- /Array
- /Function
- /String

provides: [Event]

...
*/

	var Event = new Native({

		name: 'Event',

		initialize: function(event, win) {
			win = win || window;
			var doc = win.document;
			event = event || win.event;
			if (event.$extended) return event;
			this.$extended = true;
			var type = event.type;
			var target = event.target || event.srcElement;
			while (target && target.nodeType == 3) target = target.parentNode;

			if (type.test(/key/)) {
				var code = event.which || event.keyCode;
				var key = Event.Keys.keyOf(code);
				if (type == 'keydown') {
					var fKey = code - 111;
					if (fKey > 0 && fKey < 13) key = 'f' + fKey;
				}
				key = key || String.fromCharCode(code).toLowerCase();
			} else if (type.match(/(click|mouse|menu)/i)) {
				doc = (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html: doc.body;
				var page = {
					x: event.pageX || event.clientX + doc.scrollLeft,
					y: event.pageY || event.clientY + doc.scrollTop
				};
				var client = {
					x: (event.pageX) ? event.pageX - win.pageXOffset: event.clientX,
					y: (event.pageY) ? event.pageY - win.pageYOffset: event.clientY
				};
				if (type.match(/DOMMouseScroll|mousewheel/)) {
					var wheel = (event.wheelDelta) ? event.wheelDelta / 120: - (event.detail || 0) / 3;
				}
				var rightClick = (event.which == 3) || (event.button == 2);
				var related = null;
				if (type.match(/over|out/)) {
					switch (type) {
					case 'mouseover': related = event.relatedTarget || event.fromElement; break;
					case 'mouseout': related = event.relatedTarget || event.toElement;
					}
					if (! (function() {
						while (related && related.nodeType == 3) related = related.parentNode;
						return true;
					}).create({ attempt: Browser.Engine.gecko })()) related = false;
				}
			}

			return $extend(this, {
				event: event,
				type: type,

				page: page,
				client: client,
				rightClick: rightClick,

				wheel: wheel,

				relatedTarget: related,
				target: target,

				code: code,
				key: key,

				shift: event.shiftKey,
				control: event.ctrlKey,
				alt: event.altKey,
				meta: event.metaKey
			});
		}

	});

	Event.Keys = new Hash({
		'enter': 13,
		'up': 38,
		'down': 40,
		'left': 37,
		'right': 39,
		'esc': 27,
		'space': 32,
		'backspace': 8,
		'tab': 9,
		'delete': 46
	});

	Event.implement({

		stop: function() {
			return this.stopPropagation().preventDefault();
		},

		stopPropagation: function() {
			if (this.event.stopPropagation) this.event.stopPropagation();
			else this.event.cancelBubble = true;
			return this;
		},

		preventDefault: function() {
			if (this.event.preventDefault) this.event.preventDefault();
			else this.event.returnValue = false;
			return this;
		}

	});

	/*
---

script: Element.Event.js

description: Contains Element methods for dealing with events. This file also includes mouseenter and mouseleave custom Element Events.

license: MIT-style license.

requires: 
- /Element
- /Event

provides: [Element.Event]

...
*/

	Element.Properties.events = { set: function(events) {
			this.addEvents(events);
		} };

	Native.implement([Element, Window, Document], {

		addEvent: function(type, fn) {
			var events = this.retrieve('events', {});
			events[type] = events[type] || { 'keys': [], 'values': [] };
			if (events[type].keys.contains(fn)) return this;
			events[type].keys.push(fn);
			var realType = type, custom = Element.Events.get(type), condition = fn, self = this;
			if (custom) {
				if (custom.onAdd) custom.onAdd.call(this, fn);
				if (custom.condition) {
					condition = function(event) {
						if (custom.condition.call(this, event)) return fn.call(this, event);
						return true;
					};
				}
				realType = custom.base || realType;
			}
			var defn = function() {
				return fn.call(self);
			};
			var nativeEvent = Element.NativeEvents[realType];
			if (nativeEvent) {
				if (nativeEvent == 2) {
					defn = function(event) {
						event = new Event(event, self.getWindow());
						if (condition.call(self, event) === false) event.stop();
					};
				}
				this.addListener(realType, defn);
			}
			events[type].values.push(defn);
			return this;
		},

		removeEvent: function(type, fn) {
			var events = this.retrieve('events');
			if (!events || ! events[type]) return this;
			var pos = events[type].keys.indexOf(fn);
			if (pos == - 1) return this;
			events[type].keys.splice(pos, 1);
			var value = events[type].values.splice(pos, 1)[0];
			var custom = Element.Events.get(type);
			if (custom) {
				if (custom.onRemove) custom.onRemove.call(this, fn);
				type = custom.base || type;
			}
			return (Element.NativeEvents[type]) ? this.removeListener(type, value) : this;
		},

		addEvents: function(events) {
			for (var event in events) this.addEvent(event, events[event]);
			return this;
		},

		removeEvents: function(events) {
			var type;
			if ($type(events) == 'object') {
				for (type in events) this.removeEvent(type, events[type]);
				return this;
			}
			var attached = this.retrieve('events');
			if (!attached) return this;
			if (!events) {
				for (type in attached) this.removeEvents(type);
				this.eliminate('events');
			} else if (attached[events]) {
				while (attached[events].keys[0]) this.removeEvent(events, attached[events].keys[0]);
				attached[events] = null;
			}
			return this;
		},

		fireEvent: function(type, args, delay) {
			var events = this.retrieve('events');
			if (!events || ! events[type]) return this;
			events[type].keys.each(function(fn) {
				fn.create({ 'bind': this, 'delay': delay, 'arguments': args })();
			}, this);
			return this;
		},

		cloneEvents: function(from, type) {
			from = document.id(from);
			var fevents = from.retrieve('events');
			if (!fevents) return this;
			if (!type) {
				for (var evType in fevents) this.cloneEvents(from, evType);
			} else if (fevents[type]) {
				fevents[type].keys.each(function(fn) {
					this.addEvent(type, fn);
				}, this);
			}
			return this;
		}

	});

	Element.NativeEvents = {
		click: 2, dblclick: 2, mouseup: 2, mousedown: 2, contextmenu: 2, //mouse buttons
		mousewheel: 2, DOMMouseScroll: 2, //mouse wheel
		mouseover: 2, mouseout: 2, mousemove: 2, selectstart: 2, selectend: 2, //mouse movement
		keydown: 2, keypress: 2, keyup: 2, //keyboard
		focus: 2, blur: 2, change: 2, reset: 2, select: 2, submit: 2, //form elements
		load: 1, unload: 1, beforeunload: 2, resize: 1, move: 1, DOMContentLoaded: 1, readystatechange: 1, //window
		error: 1, abort: 1, scroll: 1 //misc
	};

	(function() {

		var $check = function(event) {
			var related = event.relatedTarget;
			if (related == undefined) return true;
			if (related === false) return false;
			return ($type(this) != 'document' && related != this && related.prefix != 'xul' && ! this.hasChild(related));
		};

		Element.Events = new Hash({

			mouseenter: {
				base: 'mouseover',
				condition: $check
			},

			mouseleave: {
				base: 'mouseout',
				condition: $check
			},

			mousewheel: {
				base: (Browser.Engine.gecko) ? 'DOMMouseScroll': 'mousewheel'
			}

		});

	})();

	/*
---

script: Class.js

description: Contains the Class Function for easily creating, extending, and implementing reusable Classes.

license: MIT-style license.

requires:
- /$util
- /Native
- /Array
- /String
- /Function
- /Number
- /Hash

provides: [Class]

...
*/

	function Class(params) {

		if (params instanceof Function) params = { initialize: params };

		var newClass = function() {
			Object.reset(this);
			if (newClass._prototyping) return this;
			this._current = $empty;
			var value = (this.initialize) ? this.initialize.apply(this, arguments) : this;
			delete this._current; delete this.caller;
			return value;
		}.extend(this);

		newClass.implement(params);

		newClass.constructor = Class;
		newClass.prototype.constructor = newClass;

		return newClass;

	};

	Function.prototype.protect = function() {
		this._protected = true;
		return this;
	};

	Object.reset = function(object, key) {

		if (key == null) {
			for (var p in object) Object.reset(object, p);
			return object;
		}

		delete object[key];

		switch ($type(object[key])) {
		case 'object':
			var F = function() {};
			F.prototype = object[key];
			var i = new F;
			object[key] = Object.reset(i);
			break;
		case 'array': object[key] = $unlink(object[key]); break;
		}

		return object;

	};

	new Native({ name: 'Class', initialize: Class }).extend({

		instantiate: function(F) {
			F._prototyping = true;
			var proto = new F;
			delete F._prototyping;
			return proto;
		},

		wrap: function(self, key, method) {
			if (method._origin) method = method._origin;

			return function() {
				if (method._protected && this._current == null) throw new Error('The method "' + key + '" cannot be called.');
				var caller = this.caller, current = this._current;
				this.caller = current; this._current = arguments.callee;
				var result = method.apply(this, arguments);
				this._current = current; this.caller = caller;
				return result;
			}.extend({ _owner: self, _origin: method, _name: key });

		}

	});

	Class.implement({

		implement: function(key, value) {

			if ($type(key) == 'object') {
				for (var p in key) this.implement(p, key[p]);
				return this;
			}

			var mutator = Class.Mutators[key];

			if (mutator) {
				value = mutator.call(this, value);
				if (value == null) return this;
			}

			var proto = this.prototype;

			switch ($type(value)) {

			case 'function':
				if (value._hidden) return this;
				proto[key] = Class.wrap(this, key, value);
				break;

			case 'object':
				var previous = proto[key];
				if ($type(previous) == 'object') $mixin(previous, value);
				else proto[key] = $unlink(value);
				break;

			case 'array':
				proto[key] = $unlink(value);
				break;

			default: proto[key] = value;

			}

			return this;

		}

	});

	Class.Mutators = {

		Extends: function(parent) {

			this.parent = parent;
			this.prototype = Class.instantiate(parent);

			this.implement('parent', function() {
				var name = this.caller._name, previous = this.caller._owner.parent.prototype[name];
				if (!previous) throw new Error('The method "' + name + '" has no parent.');
				return previous.apply(this, arguments);
			}.protect());

		},

		Implements: function(items) {
			$splat(items).each(function(item) {
				if (item instanceof Function) item = Class.instantiate(item);
				this.implement(item);
			}, this);

		}

	};

	/*
---

script: Class.Extras.js

description: Contains Utility Classes that can be implemented into your own Classes to ease the execution of many common tasks.

license: MIT-style license.

requires:
- /Class

provides: [Chain, Events, Options]

...
*/

	var Chain = new Class({

		$chain: [],

		chain: function() {
			this.$chain.extend(Array.flatten(arguments));
			return this;
		},

		callChain: function() {
			return (this.$chain.length) ? this.$chain.shift().apply(this, arguments) : false;
		},

		clearChain: function() {
			this.$chain.empty();
			return this;
		}

	});

	var Events = new Class({

		$events: {},

		addEvent: function(type, fn, internal) {
			type = Events.removeOn(type);
			if (fn != $empty) {
				this.$events[type] = this.$events[type] || [];
				this.$events[type].include(fn);
				if (internal) fn.internal = true;
			}
			return this;
		},

		addEvents: function(events) {
			for (var type in events) this.addEvent(type, events[type]);
			return this;
		},

		fireEvent: function(type, args, delay) {
			type = Events.removeOn(type);
			if (!this.$events || ! this.$events[type]) return this;
			this.$events[type].each(function(fn) {
				fn.create({ 'bind': this, 'delay': delay, 'arguments': args })();
			}, this);
			return this;
		},

		removeEvent: function(type, fn) {
			type = Events.removeOn(type);
			if (!this.$events[type]) return this;
			if (!fn.internal) this.$events[type].erase(fn);
			return this;
		},

		removeEvents: function(events) {
			var type;
			if ($type(events) == 'object') {
				for (type in events) this.removeEvent(type, events[type]);
				return this;
			}
			if (events) events = Events.removeOn(events);
			for (type in this.$events) {
				if (events && events != type) continue;
				var fns = this.$events[type];
				for (var i = fns.length; i--; i) this.removeEvent(type, fns[i]);
			}
			return this;
		}

	});

	Events.removeOn = function(string) {
		return string.replace(/^on([A-Z])/, function(full, first) {
			return first.toLowerCase();
		});
	};

	var Options = new Class({

		setOptions: function() {
			this.options = $merge.run([this.options].extend(arguments));
			if (!this.addEvent) return this;
			for (var option in this.options) {
				if ($type(this.options[option]) != 'function' || ! (/^on[A-Z]/).test(option)) continue;
				this.addEvent(option, this.options[option]);
				delete this.options[option];
			}
			return this;
		}

	});

	/*
---

script: Request.js

description: Powerful all purpose Request Class. Uses XMLHTTPRequest.

license: MIT-style license.

requires:
- /Element
- /Chain
- /Events
- /Options
- /Browser

provides: [Request]

...
*/

	var Request = new Class({

		Implements: [Chain, Events, Options],

		options: { /*
		onRequest: $empty,
		onComplete: $empty,
		onCancel: $empty,
		onSuccess: $empty,
		onFailure: $empty,
		onException: $empty,*/
			url: '',
			data: '',
			headers: {
				'X-Requested-With': 'XMLHttpRequest',
				'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
			},
			async: true,
			format: false,
			method: 'post',
			link: 'ignore',
			isSuccess: null,
			emulation: true,
			urlEncoded: true,
			encoding: 'utf-8',
			evalScripts: false,
			evalResponse: false,
			noCache: false
		},

		initialize: function(options) {
			this.xhr = new Browser.Request();
			this.setOptions(options);
			this.options.isSuccess = this.options.isSuccess || this.isSuccess;
			this.headers = new Hash(this.options.headers);
		},

		onStateChange: function() {
			if (this.xhr.readyState != 4 || ! this.running) return;
			this.running = false;
			this.status = 0;
			$try(function() {
				this.status = this.xhr.status;
			}.bind(this));
			this.xhr.onreadystatechange = $empty;
			if (this.options.isSuccess.call(this, this.status)) {
				this.response = { text: this.xhr.responseText, xml: this.xhr.responseXML };
				this.success(this.response.text, this.response.xml);
			} else {
				this.response = { text: null, xml: null };
				this.failure();
			}
		},

		isSuccess: function() {
			return ((this.status >= 200) && (this.status < 300));
		},

		processScripts: function(text) {
			if (this.options.evalResponse || (/(ecma|java)script/).test(this.getHeader('Content-type'))) return $exec(text);
			return text.stripScripts(this.options.evalScripts);
		},

		success: function(text, xml) {
			this.onSuccess(this.processScripts(text), xml);
		},

		onSuccess: function() {
			this.fireEvent('complete', arguments).fireEvent('success', arguments).callChain();
		},

		failure: function() {
			this.onFailure();
		},

		onFailure: function() {
			this.fireEvent('complete').fireEvent('failure', this.xhr);
		},

		setHeader: function(name, value) {
			this.headers.set(name, value);
			return this;
		},

		getHeader: function(name) {
			return $try(function() {
				return this.xhr.getResponseHeader(name);
			}.bind(this));
		},

		check: function() {
			if (!this.running) return true;
			switch (this.options.link) {
			case 'cancel': this.cancel(); return true;
			case 'chain': this.chain(this.caller.bind(this, arguments)); return false;
			}
			return false;
		},

		send: function(options) {
			if (!this.check(options)) return this;
			this.running = true;

			var type = $type(options);
			if (type == 'string' || type == 'element') options = { data: options };

			var old = this.options;
			options = $extend({ data: old.data, url: old.url, method: old.method }, options);
			var data = options.data, url = String(options.url), method = options.method.toLowerCase();

			switch ($type(data)) {
			case 'element': data = document.id(data).toQueryString(); break;
			case 'object': case 'hash': data = Hash.toQueryString(data);
			}

			if (this.options.format) {
				var format = 'format=' + this.options.format;
				data = (data) ? format + '&' + data: format;
			}

			if (this.options.emulation && ! ['get', 'post'].contains(method)) {
				var _method = '_method=' + method;
				data = (data) ? _method + '&' + data: _method;
				method = 'post';
			}

			if (this.options.urlEncoded && method == 'post') {
				var encoding = (this.options.encoding) ? '; charset=' + this.options.encoding: '';
				this.headers.set('Content-type', 'application/x-www-form-urlencoded' + encoding);
			}

			if (this.options.noCache) {
				var noCache = 'noCache=' + new Date().getTime();
				data = (data) ? noCache + '&' + data: noCache;
			}

			var trimPosition = url.lastIndexOf('/');
			if (trimPosition > - 1 && (trimPosition = url.indexOf('#')) > - 1) url = url.substr(0, trimPosition);

			if (data && method == 'get') {
				url = url + (url.contains('?') ? '&': '?') + data;
				data = null;
			}

			this.xhr.open(method.toUpperCase(), url, this.options.async);

			this.xhr.onreadystatechange = this.onStateChange.bind(this);

			this.headers.each(function(value, key) {
				try {
					this.xhr.setRequestHeader(key, value);
				} catch(e) {
					this.fireEvent('exception', [key, value]);
				}
			}, this);

			this.fireEvent('request');
			this.xhr.send(data);
			if (!this.options.async) this.onStateChange();
			return this;
		},

		cancel: function() {
			if (!this.running) return this;
			this.running = false;
			this.xhr.abort();
			this.xhr.onreadystatechange = $empty;
			this.xhr = new Browser.Request();
			this.fireEvent('cancel');
			return this;
		}

	});

	(function() {

		var methods = {};
		['get', 'post', 'put', 'delete', 'GET', 'POST', 'PUT', 'DELETE'].each(function(method) {
			methods[method] = function() {
				var params = Array.link(arguments, { url: String.type, data: $defined });
				return this.send($extend(params, { method: method }));
			};
		});

		Request.implement(methods);

	})();

	Element.Properties.send = {

		set: function(options) {
			var send = this.retrieve('send');
			if (send) send.cancel();
			return this.eliminate('send').store('send:options', $extend({
				data: this, link: 'cancel', method: this.get('method') || 'post', url: this.get('action')
			}, options));
		},

		get: function(options) {
			if (options || ! this.retrieve('send')) {
				if (options || ! this.retrieve('send:options')) this.set('send', options);
				this.store('send', new Request(this.retrieve('send:options')));
			}
			return this.retrieve('send');
		}

	};

	Element.implement({

		send: function(url) {
			var sender = this.get('send');
			sender.send({ data: this, url: url || sender.options.url });
			return this;
		}

	});

	/*
---

script: Request.HTML.js

description: Extends the basic Request Class with additional methods for interacting with HTML responses.

license: MIT-style license.

requires:
- /Request
- /Element

provides: [Request.HTML]

...
*/

	Request.HTML = new Class({

		Extends: Request,

		options: {
			update: false,
			append: false,
			evalScripts: true,
			filter: false
		},

		processHTML: function(text) {
			var match = text.match(/<body[^>]*>([\s\S]*?)<\/body>/i);
			text = (match) ? match[1] : text;

			var container = new Element('div');

			return $try(function() {
				var root = '<root>' + text + '</root>', doc;
				if (Browser.Engine.trident) {
					doc = new ActiveXObject('Microsoft.XMLDOM');
					doc.async = false;
					doc.loadXML(root);
				} else {
					doc = new DOMParser().parseFromString(root, 'text/xml');
				}
				root = doc.getElementsByTagName('root')[0];
				if (!root) return null;
				for (var i = 0, k = root.childNodes.length; i < k; i++) {
					var child = Element.clone(root.childNodes[i], true, true);
					if (child) container.grab(child);
				}
				return container;
			}) || container.set('html', text);
		},

		success: function(text) {
			var options = this.options, response = this.response;

			response.html = text.stripScripts(function(script) {
				response.javascript = script;
			});

			var temp = this.processHTML(response.html);

			response.tree = temp.childNodes;
			response.elements = temp.getElements('*');

			if (options.filter) response.tree = response.elements.filter(options.filter);
			if (options.update) document.id(options.update).empty().set('html', response.html);
			else if (options.append) document.id(options.append).adopt(temp.getChildren());
			if (options.evalScripts) $exec(response.javascript);

			this.onSuccess(response.tree, response.elements, response.html, response.javascript);
		}

	});

	Element.Properties.load = {

		set: function(options) {
			var load = this.retrieve('load');
			if (load) load.cancel();
			return this.eliminate('load').store('load:options', $extend({ data: this, link: 'cancel', update: this, method: 'get' }, options));
		},

		get: function(options) {
			if (options || ! this.retrieve('load')) {
				if (options || ! this.retrieve('load:options')) this.set('load', options);
				this.store('load', new Request.HTML(this.retrieve('load:options')));
			}
			return this.retrieve('load');
		}

	};

	Element.implement({

		load: function() {
			this.get('load').send(Array.link(arguments, { data: Object.type, url: String.type }));
			return this;
		}

	});

	/*
---

script: Fx.js

description: Contains the basic animation logic to be extended by all other Fx Classes.

license: MIT-style license.

requires:
- /Chain
- /Events
- /Options

provides: [Fx]

...
*/

	var Fx = new Class({

		Implements: [Chain, Events, Options],

		options: {
			/*
		onStart: $empty,
		onCancel: $empty,
		onComplete: $empty,
		*/
			fps: 50,
			unit: false,
			duration: 500,
			link: 'ignore'
		},

		initialize: function(options) {
			this.subject = this.subject || this;
			this.setOptions(options);
			this.options.duration = Fx.Durations[this.options.duration] || this.options.duration.toInt();
			var wait = this.options.wait;
			if (wait === false) this.options.link = 'cancel';
		},

		getTransition: function() {
			return function(p) {
				return - (Math.cos(Math.PI * p) - 1) / 2;
			};
		},

		step: function() {
			var time = $time();
			if (time < this.time + this.options.duration) {
				var delta = this.transition((time - this.time) / this.options.duration);
				this.set(this.compute(this.from, this.to, delta));
			} else {
				this.set(this.compute(this.from, this.to, 1));
				this.complete();
			}
		},

		set: function(now) {
			return now;
		},

		compute: function(from, to, delta) {
			return Fx.compute(from, to, delta);
		},

		check: function() {
			if (!this.timer) return true;
			switch (this.options.link) {
			case 'cancel': this.cancel(); return true;
			case 'chain': this.chain(this.caller.bind(this, arguments)); return false;
			}
			return false;
		},

		start: function(from, to) {
			if (!this.check(from, to)) return this;
			this.from = from;
			this.to = to;
			this.time = 0;
			this.transition = this.getTransition();
			this.startTimer();
			this.onStart();
			return this;
		},

		complete: function() {
			if (this.stopTimer()) this.onComplete();
			return this;
		},

		cancel: function() {
			if (this.stopTimer()) this.onCancel();
			return this;
		},

		onStart: function() {
			this.fireEvent('start', this.subject);
		},

		onComplete: function() {
			this.fireEvent('complete', this.subject);
			if (!this.callChain()) this.fireEvent('chainComplete', this.subject);
		},

		onCancel: function() {
			this.fireEvent('cancel', this.subject).clearChain();
		},

		pause: function() {
			this.stopTimer();
			return this;
		},

		resume: function() {
			this.startTimer();
			return this;
		},

		stopTimer: function() {
			if (!this.timer) return false;
			this.time = $time() - this.time;
			this.timer = $clear(this.timer);
			return true;
		},

		startTimer: function() {
			if (this.timer) return false;
			this.time = $time() - this.time;
			this.timer = this.step.periodical(Math.round(1000 / this.options.fps), this);
			return true;
		}

	});

	Fx.compute = function(from, to, delta) {
		return (to - from) * delta + from;
	};

	Fx.Durations = { 'short': 250, 'normal': 500, 'long': 1000 };

	/*
---

script: Fx.CSS.js

description: Contains the CSS animation logic. Used by Fx.Tween, Fx.Morph, Fx.Elements.

license: MIT-style license.

requires:
- /Fx
- /Element.Style

provides: [Fx.CSS]

...
*/

	Fx.CSS = new Class({

		Extends: Fx,

		//prepares the base from/to object
		prepare: function(element, property, values) {
			values = $splat(values);
			var values1 = values[1];
			if (!$chk(values1)) {
				values[1] = values[0];
				values[0] = element.getStyle(property);
			}
			var parsed = values.map(this.parse);
			return { from: parsed[0], to: parsed[1] };
		},

		//parses a value into an array
		parse: function(value) {
			value = $lambda(value)();
			value = (typeof value == 'string') ? value.split(' ') : $splat(value);
			return value.map(function(val) {
				val = String(val);
				var found = false;
				Fx.CSS.Parsers.each(function(parser, key) {
					if (found) return;
					var parsed = parser.parse(val);
					if ($chk(parsed)) found = { value: parsed, parser: parser };
				});
				found = found || { value: val, parser: Fx.CSS.Parsers.String };
				return found;
			});
		},

		//computes by a from and to prepared objects, using their parsers.
		compute: function(from, to, delta) {
			var computed = [];
			(Math.min(from.length, to.length)).times(function(i) {
				computed.push({ value: from[i].parser.compute(from[i].value, to[i].value, delta), parser: from[i].parser });
			});
			computed.$family = { name: 'fx:css:value' };
			return computed;
		},

		//serves the value as settable
		serve: function(value, unit) {
			if ($type(value) != 'fx:css:value') value = this.parse(value);
			var returned = [];
			value.each(function(bit) {
				returned = returned.concat(bit.parser.serve(bit.value, unit));
			});
			return returned;
		},

		//renders the change to an element
		render: function(element, property, value, unit) {
			element.setStyle(property, this.serve(value, unit));
		},

		//searches inside the page css to find the values for a selector
		search: function(selector) {
			if (Fx.CSS.Cache[selector]) return Fx.CSS.Cache[selector];
			var to = {};
			Array.each(document.styleSheets, function(sheet, j) {
				var href = sheet.href;
				if (href && href.contains('://') && ! href.contains(document.domain)) return;
				var rules = sheet.rules || sheet.cssRules;
				Array.each(rules, function(rule, i) {
					if (!rule.style) return;
					var selectorText = (rule.selectorText) ? rule.selectorText.replace(/^\w+/, function(m) {
						return m.toLowerCase();
					}) : null;
					if (!selectorText || ! selectorText.test('^' + selector + '$')) return;
					Element.Styles.each(function(value, style) {
						if (!rule.style[style] || Element.ShortStyles[style]) return;
						value = String(rule.style[style]);
						to[style] = (value.test(/^rgb/)) ? value.rgbToHex() : value;
					});
				});
			});
			return Fx.CSS.Cache[selector] = to;
		}

	});

	Fx.CSS.Cache = {};

	Fx.CSS.Parsers = new Hash({

		Color: {
			parse: function(value) {
				if (value.match(/^#[0-9a-f]{3,6}$/i)) return value.hexToRgb(true);
				return ((value = value.match(/(\d+),\s*(\d+),\s*(\d+)/))) ? [value[1], value[2], value[3]] : false;
			},
			compute: function(from, to, delta) {
				return from.map(function(value, i) {
					return Math.round(Fx.compute(from[i], to[i], delta));
				});
			},
			serve: function(value) {
				return value.map(Number);
			}
		},

		Number: {
			parse: parseFloat,
			compute: Fx.compute,
			serve: function(value, unit) {
				return (unit) ? value + unit: value;
			}
		},

		String: {
			parse: $lambda(false),
			compute: $arguments(1),
			serve: $arguments(0)
		}

	});

	/*
---

script: Fx.Tween.js

description: Formerly Fx.Style, effect to transition any CSS property for an element.

license: MIT-style license.

requires: 
- /Fx.CSS

provides: [Fx.Tween, Element.fade, Element.highlight]

...
*/

	Fx.Tween = new Class({

		Extends: Fx.CSS,

		initialize: function(element, options) {
			this.element = this.subject = document.id(element);
			this.parent(options);
		},

		set: function(property, now) {
			if (arguments.length == 1) {
				now = property;
				property = this.property || this.options.property;
			}
			this.render(this.element, property, now, this.options.unit);
			return this;
		},

		start: function(property, from, to) {
			if (!this.check(property, from, to)) return this;
			var args = Array.flatten(arguments);
			this.property = this.options.property || args.shift();
			var parsed = this.prepare(this.element, this.property, args);
			return this.parent(parsed.from, parsed.to);
		}

	});

	Element.Properties.tween = {

		set: function(options) {
			var tween = this.retrieve('tween');
			if (tween) tween.cancel();
			return this.eliminate('tween').store('tween:options', $extend({ link: 'cancel' }, options));
		},

		get: function(options) {
			if (options || ! this.retrieve('tween')) {
				if (options || ! this.retrieve('tween:options')) this.set('tween', options);
				this.store('tween', new Fx.Tween(this, this.retrieve('tween:options')));
			}
			return this.retrieve('tween');
		}

	};

	Element.implement({

		tween: function(property, from, to) {
			this.get('tween').start(arguments);
			return this;
		},

		fade: function(how) {
			var fade = this.get('tween'), o = 'opacity', toggle;
			how = $pick(how, 'toggle');
			switch (how) {
			case 'in': fade.start(o, 1); break;
			case 'out': fade.start(o, 0); break;
			case 'show': fade.set(o, 1); break;
			case 'hide': fade.set(o, 0); break;
			case 'toggle':
				var flag = this.retrieve('fade:flag', this.get('opacity') == 1);
				fade.start(o, (flag) ? 0: 1);
				this.store('fade:flag', ! flag);
				toggle = true;
				break;
			default: fade.start(o, arguments);
			}
			if (!toggle) this.eliminate('fade:flag');
			return this;
		},

		highlight: function(start, end) {
			if (!end) {
				end = this.retrieve('highlight:original', this.getStyle('background-color'));
				end = (end == 'transparent') ? '#fff': end;
			}
			var tween = this.get('tween');
			tween.start('background-color', start || '#ffff88', end).chain(function() {
				this.setStyle('background-color', this.retrieve('highlight:original'));
				tween.callChain();
			}.bind(this));
			return this;
		}

	});

	/*
---

script: Fx.Transitions.js

description: Contains a set of advanced transitions to be used with any of the Fx Classes.

license: MIT-style license.

credits:
- Easing Equations by Robert Penner, <http://www.robertpenner.com/easing/>, modified and optimized to be used with MooTools.

requires:
- /Fx

provides: [Fx.Transitions]

...
*/

	Fx.implement({

		getTransition: function() {
			var trans = this.options.transition || Fx.Transitions.Sine.easeInOut;
			if (typeof trans == 'string') {
				var data = trans.split(':');
				trans = Fx.Transitions;
				trans = trans[data[0]] || trans[data[0].capitalize()];
				if (data[1]) trans = trans['ease' + data[1].capitalize() + (data[2] ? data[2].capitalize() : '')];
			}
			return trans;
		}

	});

	Fx.Transition = function(transition, params) {
		params = $splat(params);
		return $extend(transition, {
			easeIn: function(pos) {
				return transition(pos, params);
			},
			easeOut: function(pos) {
				return 1 - transition(1 - pos, params);
			},
			easeInOut: function(pos) {
				return (pos <= 0.5) ? transition(2 * pos, params) / 2: (2 - transition(2 * (1 - pos), params)) / 2;
			}
		});
	};

	Fx.Transitions = new Hash({

		linear: $arguments(0)

	});

	Fx.Transitions.extend = function(transitions) {
		for (var transition in transitions) Fx.Transitions[transition] = new Fx.Transition(transitions[transition]);
	};

	Fx.Transitions.extend({

		Pow: function(p, x) {
			return Math.pow(p, x[0] || 6);
		},

		Expo: function(p) {
			return Math.pow(2, 8 * (p - 1));
		},

		Circ: function(p) {
			return 1 - Math.sin(Math.acos(p));
		},

		Sine: function(p) {
			return 1 - Math.sin((1 - p) * Math.PI / 2);
		},

		Back: function(p, x) {
			x = x[0] || 1.618;
			return Math.pow(p, 2) * ((x + 1) * p - x);
		},

		Bounce: function(p) {
			var value;
			for (var a = 0, b = 1; 1; a += b, b /= 2) {
				if (p >= (7 - 4 * a) / 11) {
					value = b * b - Math.pow((11 - 6 * a - 11 * p) / 4, 2);
					break;
				}
			}
			return value;
		},

		Elastic: function(p, x) {
			return Math.pow(2, 10 * --p) * Math.cos(20 * p * Math.PI * (x[0] || 1) / 3);
		}

	});

	['Quad', 'Cubic', 'Quart', 'Quint'].each(function(transition, i) {
		Fx.Transitions[transition] = new Fx.Transition(function(p) {
			return Math.pow(p, [i + 2]);
		});
	});

	/*
---

script: Fx.Morph.js

description: Formerly Fx.Styles, effect to transition any number of CSS properties for an element using an object of rules, or CSS based selector rules.

license: MIT-style license.

requires:
- /Fx.CSS

provides: [Fx.Morph]

...
*/

	Fx.Morph = new Class({

		Extends: Fx.CSS,

		initialize: function(element, options) {
			this.element = this.subject = document.id(element);
			this.parent(options);
		},

		set: function(now) {
			if (typeof now == 'string') now = this.search(now);
			for (var p in now) this.render(this.element, p, now[p], this.options.unit);
			return this;
		},

		compute: function(from, to, delta) {
			var now = {};
			for (var p in from) now[p] = this.parent(from[p], to[p], delta);
			return now;
		},

		start: function(properties) {
			if (!this.check(properties)) return this;
			if (typeof properties == 'string') properties = this.search(properties);
			var from = {}, to = {};
			for (var p in properties) {
				var parsed = this.prepare(this.element, p, properties[p]);
				from[p] = parsed.from;
				to[p] = parsed.to;
			}
			return this.parent(from, to);
		}

	});

	Element.Properties.morph = {

		set: function(options) {
			var morph = this.retrieve('morph');
			if (morph) morph.cancel();
			return this.eliminate('morph').store('morph:options', $extend({ link: 'cancel' }, options));
		},

		get: function(options) {
			if (options || ! this.retrieve('morph')) {
				if (options || ! this.retrieve('morph:options')) this.set('morph', options);
				this.store('morph', new Fx.Morph(this, this.retrieve('morph:options')));
			}
			return this.retrieve('morph');
		}

	};

	Element.implement({

		morph: function(props) {
			this.get('morph').start(props);
			return this;
		}

	});

	/*
---

script: DomReady.js

description: Contains the custom event domready.

license: MIT-style license.

requires:
- /Element.Event

provides: [DomReady]

...
*/

	Element.Events.domready = {

		onAdd: function(fn) {
			if (Browser.loaded) fn.call(this);
		}

	};

	(function() {

		var domready = function() {
			if (Browser.loaded) return;
			Browser.loaded = true;
			window.fireEvent('domready');
			document.fireEvent('domready');
		};

		window.addEvent('load', domready);

		if (Browser.Engine.trident) {
			var temp = document.createElement('div');
			(function() { 
				($try(function() {
					temp.doScroll(); // Technique by Diego Perini
					return document.id(temp).inject(document.body).set('html', 'temp').dispose();
				})) ? domready() : arguments.callee.delay(50);
			})();
		} else if (Browser.Engine.webkit && Browser.Engine.version < 525) { 
			(function() { 
				(['loaded', 'complete'].contains(document.readyState)) ? domready() : arguments.callee.delay(50);
			})();
		} else {
			document.addEvent('DOMContentLoaded', domready);
		}

	})();

	/*
---

script: Cookie.js

description: Class for creating, reading, and deleting browser Cookies.

license: MIT-style license.

credits:
- Based on the functions by Peter-Paul Koch (http://quirksmode.org).

requires:
- /Options

provides: [Cookie]

...
*/

	var Cookie = new Class({

		Implements: Options,

		options: {
			path: false,
			domain: false,
			duration: false,
			secure: false,
			document: document
		},

		initialize: function(key, options) {
			this.key = key;
			this.setOptions(options);
		},

		write: function(value) {
			value = encodeURIComponent(value);
			if (this.options.domain) value += '; domain=' + this.options.domain;
			if (this.options.path) value += '; path=' + this.options.path;
			if (this.options.duration) {
				var date = new Date();
				date.setTime(date.getTime() + this.options.duration * 24 * 60 * 60 * 1000);
				value += '; expires=' + date.toGMTString();
			}
			if (this.options.secure) value += '; secure';
			this.options.document.cookie = this.key + '=' + value;
			return this;
		},

		read: function() {
			var value = this.options.document.cookie.match('(?:^|;)\\s*' + this.key.escapeRegExp() + '=([^;]*)');
			return (value) ? decodeURIComponent(value[1]) : null;
		},

		dispose: function() {
			new Cookie(this.key, $merge(this.options, { duration: - 1 })).write('');
			return this;
		}

	});

	Cookie.write = function(key, value, options) {
		return new Cookie(key, options).write(value);
	};

	Cookie.read = function(key) {
		return new Cookie(key).read();
	};

	Cookie.dispose = function(key, options) {
		return new Cookie(key, options).dispose();
	};

	/*
---

script: Swiff.js

description: Wrapper for embedding SWF movies. Supports External Interface Communication.

license: MIT-style license.

credits: 
- Flash detection & Internet Explorer + Flash Player 9 fix inspired by SWFObject.

requires:
- /Options
- /$util

provides: [Swiff]

...
*/

	var Swiff = new Class({

		Implements: [Options],

		options: {
			id: null,
			height: 1,
			width: 1,
			container: null,
			properties: {},
			params: {
				quality: 'high',
				allowScriptAccess: 'always',
				wMode: 'transparent',
				swLiveConnect: true
			},
			callBacks: {},
			vars: {}
		},

		toElement: function() {
			return this.object;
		},

		initialize: function(path, options) {
			this.instance = 'Swiff_' + $time();

			this.setOptions(options);
			options = this.options;
			var id = this.id = options.id || this.instance;
			var container = document.id(options.container);

			Swiff.CallBacks[this.instance] = {};

			var params = options.params, vars = options.vars, callBacks = options.callBacks;
			var properties = $extend({ height: options.height, width: options.width }, options.properties);

			var self = this;

			for (var callBack in callBacks) {
				Swiff.CallBacks[this.instance][callBack] = (function(option) {
					return function() {
						return option.apply(self.object, arguments);
					};
				})(callBacks[callBack]);
				vars[callBack] = 'Swiff.CallBacks.' + this.instance + '.' + callBack;
			}

			params.flashVars = Hash.toQueryString(vars);
			if (Browser.Engine.trident) {
				properties.classid = 'clsid:D27CDB6E-AE6D-11cf-96B8-444553540000';
				params.movie = path;
			} else {
				properties.type = 'application/x-shockwave-flash';
				properties.data = path;
			}
			var build = '<object id="' + id + '"';
			for (var property in properties) build += ' ' + property + '="' + properties[property] + '"';
			build += '>';
			for (var param in params) {
				if (params[param]) build += '<param name="' + param + '" value="' + params[param] + '" />';
			}
			build += '</object>';
			this.object = ((container) ? container.empty() : new Element('div')).set('html', build).firstChild;
		},

		replaces: function(element) {
			element = document.id(element, true);
			element.parentNode.replaceChild(this.toElement(), element);
			return this;
		},

		inject: function(element) {
			document.id(element, true).appendChild(this.toElement());
			return this;
		},

		remote: function() {
			return Swiff.remote.apply(Swiff, [this.toElement()].extend(arguments));
		}

	});

	Swiff.CallBacks = {};

	Swiff.remote = function(obj, fn) {
		var rs = obj.CallFunction('<invoke name="' + fn + '" returntype="javascript">' + __flash__argumentsToXML(arguments, 2) + '</invoke>');
		return eval(rs);
	};

// end Greased MooTools

	var preferences = undefined;

	// hack to circumvent 'bug' when overriding toString (and others):
	// https://mootools.lighthouseapp.com/projects/2706/tickets/651-classtostring-broken-on-122-big-regression
	['toString', 'toLocaleString', 'valueOf', 'toSource', 'watch', 'unwatch', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable'].each(function(method) {
		Class.Mutators[method] = $arguments(0);
	});

// Greasemonkey helpers and wrappers
var getJSVariable = function(regex) {
	// Thanks to Vispillo for this compact code
	var retval;
	$$('script').each(function(script) {
		if (retval != undefined) {
			return;
		}
		var html = script.innerHTML;
		try {
			retval = html.match(regex)[1];
		} catch(e) {
		}
	});
	return retval;
}

GM_getMagisterLudi = function() {
	return getJSVariable(/[\"\']api_key[\"\'][ :]+[\'\"]([^\'\"]+)[\'\"]/);
}

GM_getAuthHash = function() {
	return getJSVariable(/[\"\']auth_hash[\"\'][ :]+[\'\"]([^\'\"]+)[\'\"]/);
}

GM_getAuthToken = function() {
	return getJSVariable(/[\"\']auth_token[\"\'][ :]+[\'\"]([^\'\"]+)[\'\"]/);
}

// end Greasemonkey helpers and wrappers

function getVersion(callbackId, callbackEvent) {
        $(callbackId).fireEvent(callbackEvent, FIELversion);
}

// version check
	new Element('span', {
		id: 'FIEL-updatenotifier',
		styles: {
			display: 'none',
			visibility: 'hidden'
		},
		events: {
			'checkversion': function (evt) {
				try {
					GM_setValue("FIEL.version", evt);
					checkVersion(evt);
				} catch (e) {
				}
			}
		}
	}).inject($$('body')[0], 'bottom');
	getVersion('FIEL-updatenotifier', 'checkversion');

function showUpdateNotification(data) {
	var onlineVersion = data.onlineVersion;
	var version = data.version;
	var beta = data.beta;

    var color = 'white';
	var updatespan = $('AlesaDams_updates_span');
	if (!$chk(updatespan)) {
	    updatespan = new Element('span', {
		id: 'AlesaDams_updates_span',
		// copied from Google++ userscript:
		styles: {
		    'background': '#E0E0E0',
		    padding: '2px 4px',
		    display: 'block',
		    '-moz-background-clip': 'border',
		    '-moz-background-origin': 'padding',
		    '-moz-background-inline-policy': 'continuous',
		    position: 'fixed',
		    opacity: '0.7',
		    'z-index': 1011, // the lightbox layer is 1004 on the new photo page
		    bottom: '5px',
		    right: '5px',
		    left: '5px'
		}
	    }).inject($(document).getElement("body"));
	} else {
		// make it darker if already created by another script:
		updatespan.setStyle('background', '#E0E0E0');
	}
    var bgColor = beta ? 'grey' : 'black';
	var updater = new Element('span', {
		styles: {
			background: bgColor + ' none repeat scroll 0% 0%',
			margin: '2px 5px',
			position: 'relative',
			'float': beta ? 'left' : 'right',
			opacity: beta ? '0.5' : ''
		}
	}).inject(updatespan);
    new Element('a', {
        html: 'Flickr Inline Edit Light: ' + (beta ? 'beta ' + version : onlineVersion + ' available'),
        href: installPage,
        target: '_blank',
        title:  'to the ' + (beta ? 'stable version' : '') + ' install page (opens in new tab)',
        styles: {
            'color': color,
            'text-decoration': 'none'
        }
    }).inject(updater);
    new Element('a', {
        html: beta ? ' (feedback)' : ' (Changes)',
        title: 'opens in new tab',
        href: 'http://www.flickr.com/groups/flickrhacks/discuss/72157635091449571/',
        styles: {
            'text-decoration': 'none'
        },
        target: '_blank'
    }).inject(updater);
}

function outOfDate(version, onlineVersion) {
        var reVersionMatch      = /(\d+)\.(\d+)\.(\d+)/;
        var onlineVersionParts  = reVersionMatch.exec(onlineVersion);
        var currentVersionParts = reVersionMatch.exec(version);
        var onlineVersionMajor, onlineVersionMinor, onlineVersionBuild;
        //[ onlineVersion, onlineVersionMajor, onlineVersionMinor, onlineVersionBuild ] = onlineVersionParts; 'invalid left-hand side' in Chrome
        onlineVersionMajor = onlineVersionParts[1];
        onlineVersionMinor = onlineVersionParts[2];
        onlineVersionBuild = onlineVersionParts[3];
        var currentVersionMajor, currentVersionMinor, currentVersionBuild;
        //[ currentVersion, currentVersionMajor, currentVersionMinor, currentVersionBuild] = currentVersionParts;
        currentVersionMajor = currentVersionParts[1];
        currentVersionMinor = currentVersionParts[2];
        currentVersionBuild = currentVersionParts[3];
        // first check major: important update! => rewrite, flickr updates, greasemonkey updates
        if (parseInt(onlineVersionMajor, 10) > parseInt(currentVersionMajor, 10)) {
            return true;
        } else if (parseInt(onlineVersionMajor, 10) === parseInt(currentVersionMajor, 10)) { // we don't want to downgrade
            // minor version update => new functionality
            if (parseInt(onlineVersionMinor, 10) > parseInt(currentVersionMinor, 10)) {
                return true;
            } else if (parseInt(onlineVersionMinor, 10) === parseInt(currentVersionMinor, 10)) { // we don't want to downgrade
                // build version update => bugfixes
                if (parseInt(onlineVersionBuild, 10) > parseInt(currentVersionBuild, 10)) {
                    return true;
                }
            }
        }
	return false;
}

function getThreadReply(data) {
        var threadId = data.threadId;
	var replyId = data.replyId;
        var callback = data.callback;

        try {  
                new Request({
                        url: 'http://www.flickr.com',
                        onSuccess: function (responseText, responseXML) {
                                    try {
                                        var result;
                                        try {
                                            result = JSON.parse(responseText);
                                        } catch (e) {
                    				GM_log("error parsing JSON reply for thread " + threadId + " (" + e + "): '" + responseText);
		    				callback({ threadId: threadId, success: false, message: e });
						return;
                                        }
                                        if (result.stat === 'fail') {
                                                callback({ threadId: threadId, success: false, message: result.message });
                                        } else {
                                                callback({ threadId: threadId, success: true, message: result.reply.message._content });
                                        }
                                    } catch (e) {
                                        GM_log("ERROR processing result: " + e);
                                        callback({ threadId: threadId, success: false, message: "ERROR processing result: " + e });
                                    }
                                },
                                onFailure: function (response) {
                                        GM_log("error: " + response.statusText);
                                        callback({ threadId: threadId, success: false, message: response.statusText });
                                }
                }).get('/services/rest', {
                        api_key: GM_getMagisterLudi(),
                        auth_hash: GM_getAuthHash(),
                        auth_token: GM_getAuthToken(),
                        format: 'json',
                        method: 'flickr.groups.discuss.replies.getInfo',
                        nojsoncallback: 1,
                        topic_id: threadId,
			reply_id: replyId
                });
        } catch (e) {
                callback({ threadId: threadId, success: false, message: 'Exception: ' + e });
        }
}

function checkVersion(version) {
    var lastVersionCheckTime = GM_getValue("lastVersionCheckTime");
    var elapsedtime;
    var CPStartTime = new Date();
    if ($chk(lastVersionCheckTime)) {
        elapsedtime = CPStartTime.getTime() - lastVersionCheckTime;
    }
    if (!$chk(lastVersionCheckTime) || elapsedtime / 1000 > 60 * 60 * 12) { //more then 12h ago
    	getThreadReply({ threadId: '72157634086550096',
			 replyId: '72157635090723013',
			callback: function(retval) {
				var success = retval.success;
				var message = retval.message;
				if (!success) {
					GM_log("error getting version info: " + message);
					GM_deleteValue("onlineVersion");
					GM_deleteValue("lastVersionCheckTime");
					return;
				}
				var onlineVersion = message.split(/<i>current version:\s*/)[1].split(/<\/i>/)[0];
				GM_setValue("onlineVersion", onlineVersion);
				GM_setValue("lastVersionCheckTime", (new Date()).getTime().toString());
			}
	});
        GM_setValue("lastVersionCheckTime", CPStartTime.getTime().toString());
    }

    var onlineVersion = GM_getValue("onlineVersion");
    if ($chk(onlineVersion)) {
        var updateAvailable = outOfDate(version, onlineVersion);
        if (updateAvailable) {
        	showUpdateNotification({ onlineVersion: onlineVersion });
        } else if (version != onlineVersion) {
		showUpdateNotification({ version: version, beta: true });
	}
    }
}

function showAreYouSureDialog(topicID, commentID, callback) {
	var ret = confirm("Are you sure you want to remove this reply?");
	callback({ answer: ret ? "yes" : "no", topicID: topicID, commentID: commentID });
}

function removeComment(topicID, commentID, callback) {
	GM_log("DEBUG: removing comment '" + commentID + "' from topic '" + topicID + "'");
        try {  
                new Request({
                        url: 'http://www.flickr.com',
                        onSuccess: function (responseText, responseXML) {
                                    try {
                                        var result;
                                        try {
                                            result = JSON.parse(responseText);
                                        } catch (e) {
                    				GM_log("error parsing JSON reply for thread " + topicID + " (" + e + "): '" + responseText);
		    				callback({ topicID: topicID, commentID: commentID, success: false, message: e });
						return;
                                        }
                                        if (result.stat === 'fail') {
						if (result.code != 3) { // insufficient permissions - not really though
	                                                callback({ topicID: topicID, commentID: commentID, success: false, message: result.message });
							return;
						}
						removeCommentWithPOST(topicID, commentID, callback);
                                        } else {
                                                callback({ topicID: topicID, commentID: commentID, success: true });
                                        }
                                    } catch (e) {
                                        GM_log("ERROR processing result: " + e);
                                        callback({ topicID: topicID, commentID: commentID, success: false, message: "ERROR processing result: " + e });
                                    }
                                },
                                onFailure: function (response) {
                                        GM_log("error: " + response.statusText);
                                        callback({ topicID: topicID, commentID: commentID, success: false, message: response.statusText });
                                }
                }).get('/services/rest', {
                        api_key: GM_getMagisterLudi(),
                        auth_hash: GM_getAuthHash(),
                        auth_token: GM_getAuthToken(),
                        format: 'json',
                        method: 'flickr.groups.discuss.replies.delete',
                        nojsoncallback: 1,
                        topic_id: topicID,
			reply_id: commentID
                });
        } catch (e) {
                callback({ topicID: topicID, commentID: commentID, success: false, message: 'Exception: ' + e });
        }
}

function removeCommentWithPOST(topicID, commentID, callback) {
	GM_log("DEBUG: removing comment '" + commentID + "' from topic '" + topicID + " (POST)");
	var baseUrl = /(^.*flickr\.com\/groups\/[^\/]+\/discuss)/.exec(document.location.href)[1];
        try {  
                new Request({
                        url: baseUrl + '/' + topicID + '/' + commentID + '/delete',
			headers: {
				"Content-Type": "application/x-www-form-urlencoded"
			},	
                        onSuccess: function (responseText, responseXML) {
				var tempDiv = new Element('div');
				tempDiv.innerHTML = responseText.stripScripts();
				var problem = tempDiv.getElement('p.Problem');
				if ($chk(problem)) {
					callback({ topicID: topicID, commentID: commentID, success: false, message: problem.innerHTML });
				} else {
					callback({ topicID: topicID, commentID: commentID, success: true });
				}
                        },
                        onFailure: function (response) {
                                GM_log("error: " + response.statusText);
                                callback({ topicID: topicID, commentID: commentID, success: false, message: response.statusText });
                        }
                }).post({
			magic_cookie: GM_getAuthHash(),
			done: 1
		});
        } catch (e) {
                callback({ topicID: topicID, commentID: commentID, success: false, message: 'Exception: ' + e });
        }
}

var topicID = document.location.href.match(/flickr.com\/groups\/[^\/]+\/discuss\/(\d+)/)[1];
var groupName = document.location.href.match(/flickr.com\/groups\/([^\/]+)\/discuss\/\d+/)[1];
$$('table.TopicReply').forEach(function (table) {
	table.getElements('td.Said').forEach(function (entry) {
		var small = entry.getElements('small').forEach(function (smallEl) {
			var hasEdit = false;
			var hasDelete = false;
			var editLink = null;
			var deleteLink = null;
			var deleteHref = new RegExp(groupName + '\/discuss\/' + topicID + '\/\\d+\/delete');
			var editHref = new RegExp(groupName + '\/discuss\/' + topicID + '\/\\d+\/edit');
			smallEl.getElements('a').forEach(function (anchor) {
				var href = anchor.get('href');
				if (!$chk(href)) {
					return;
				}
				if (href.match(deleteHref)) {
					hasDelete = true;
					deleteLink = anchor;
					return;
				}
				if (href.match(editHref)) {
					hasEdit = true;
					editLink = anchor;
					return;
				}
			});
			if (!hasEdit || !hasDelete) {
				return;
			}
			var commentID = editLink.get('href').match(new RegExp(groupName + '\/discuss\/' + topicID + '\/(\\d+)\/edit'))[1];
			var separator = new Element('label', {
				html: ' | '
			}).inject(deleteLink, 'after');
/*
			var inlineEditLink = new Element('a', {
				html: 'inline edit',
				href: 'http://www.flickr.com/groups/' + groupName + '/discuss/' + topicID + '/' + commentID,
				events: {
					click: function(evt) {
						evt.preventDefault();
					}
				}
			}).inject(separator, 'after');
			separator = new Element('label', {
				html: ' | '
			}).inject(inlineEditLink, 'after');
*/
			var inlineDeleteLink = new Element('a', {
				html: 'inline delete',
				href: 'http://www.flickr.com/groups/' + groupName + '/discuss/' + topicID  + '/' + commentID,
				events: {
					click: function(evt) {
						evt.preventDefault();
						var target = $(evt.target);
						var previousError = $('FIEL-error-' + commentID);
						if ($chk(previousError)) previousError.destroy();
						var commentRow = target.getParent('td.Said').getParent('tr');
						commentRow.setStyle('opacity', 0.3);
						showAreYouSureDialog(topicID, commentID, function(deleteAnswer) {
							if (deleteAnswer.answer == 'no') {
								commentRow.setStyle('opacity', 1.0);
								return;
							}
							var content = commentRow.getElement('td.Said');
							// make an 'empty' copy
							var contentCopy = content.clone();
							contentCopy.empty();
							content.getChildren('h4').clone().inject(contentCopy);

							new Element('img', { title: 'removing', src: 'http://www.flickr.com/images/pulser2.gif' }).inject(contentCopy);
							contentCopy.replaces(content);
							removeComment(deleteAnswer.topicID, deleteAnswer.commentID, function (retval) {
								contentCopy.getChildren('img[src*=pulser]').dispose();
								if (retval.success) {
									new Element('i', { html: 'removed' }).inject(contentCopy);
									return;
								}
								commentRow.setStyle('opacity', 1.0);
								new Element('span', {
									id: 'FIEL-error-' + commentID,
									html: 'error deleting reply: ' + retval.message + " (click to restore)",
									styles: {
										color: 'red',
										'font-weight': 'bold',
										cursor: 'pointer'
									},
									events: {
										click: function(evt) {
											content.replaces(contentCopy);
											contentCopy.destroy();
										}
									}		
								}).inject(contentCopy);
							});
						});
					}
				}
			}).inject(separator, 'after');
		});
	});
});

})();

